percentages

A

adstarc

I am new to excel and I am trying to find out how to do percentages. One of
my questions is find out 25% of 196 and I am just drawing a blank!
 
M

Mike H

There are a few ways and it may become more understandable to you if you
consider this. Dividing any number by 100 gives 1% of that number so in your
case

196/100*25 = 25% of 196

to make this into an excel formula put an = sign in front

=196/100*25

Mike
 
N

Niek Otten

Hi Mike,

My standard answer:
=============================================================
About percentages in Excel

Niek Otten, July 26 2006

In Excel, percentages are stored as fractions; 15% is stored as 0.15, 100% as 1. That makes it easy to calculate with; just
multiply a number with a percentage and you get what you need. No need to divide/multiply by 100. In fact, if you see a
calculation with percentages which has the number 100 somewhere in the formula; be very careful, it might be wrong or at least use
percentages in a way they weren't meant to be used in Excel.
The conversion to a fraction happens automatically if you enter the % sign: if you enter "15%" (without the quotes) the
value will be 0.15 and it will be displayed as 15%. If you then enter 12 in the same cell, two things can happen: It will be the
number 12 or 12%. What happens in your case depends on a setting:
Tools>Options, Edit tab, "Enable automatic percent entry" (only Excel2000 and newer).
All built-in functions of Excel and all the functions in Analysis Toolpak use this representation of percentages: be careful
when supplying parameters to these functions; never use whole numbers (like 8), always use fractions (like 0.08 or, even better,
8%).

Frequently Asked Questions:

Q:
I have A1 and B1. How do I get C1 to show B1 as a percentage of A1?
A:
Formula in C1: =B1/A1, Format as %

Q:
I have A1 and B1. How do I show the difference as a percentage in C1?
A:
As a percentage of A1: =(B1-A1)/A1, Format as %
As a percentage of B1: =(B1-A1)/B1, Format as %


--
Kind regards,

Niek Otten
Microsoft MVP - Excel

=============================================================

| There are a few ways and it may become more understandable to you if you
| consider this. Dividing any number by 100 gives 1% of that number so in your
| case
|
| 196/100*25 = 25% of 196
|
| to make this into an excel formula put an = sign in front
|
| =196/100*25
|
| Mike
|
| "adstarc" wrote:
|
| > I am new to excel and I am trying to find out how to do percentages. One of
| > my questions is find out 25% of 196 and I am just drawing a blank!
 
M

Mike H

Niek,

In Excel I would do percentage calulations as you describe but only because
modern tools such as Excel have made me lazy. I learnt these calculations in
the days before spreadsheets and calculators when multiplyng a number by 25%
using pencil and paper simply made (and still makes) no sense hence my
qualified answer to the OP that there are several methods.

In my humble view it is much better that someone inderstands how a
percentage is arrived at then have them accept that =mynumber*25% will work
it out for you.

Regards,

Mike H
 
M

MartinW

I second Mike's comments and take it a little further.
Personally I think that the percentage keys in Excel or in
calculators should not exist.

As Mike says, they are handy little tools for someone who understands
percentages, however, for someone who doesn't understand them
they are just a disaster waiting to happen.

I wish I had one cent for everytime an error has been created by misuse
of the percentage function! Get rid of it and teach people how percentages
work, they are not a difficult concept to get a handle on.

Regards
Martin
 
N

Niek Otten

Should the * symbol be removed and should we teach users how to do repetitive addition? :)

--
Kind regards,

Niek Otten
Microsoft MVP - Excel


|I second Mike's comments and take it a little further.
| Personally I think that the percentage keys in Excel or in
| calculators should not exist.
|
| As Mike says, they are handy little tools for someone who understands
| percentages, however, for someone who doesn't understand them
| they are just a disaster waiting to happen.
|
| I wish I had one cent for everytime an error has been created by misuse
| of the percentage function! Get rid of it and teach people how percentages
| work, they are not a difficult concept to get a handle on.
|
| Regards
| Martin
|
|
| | > Niek,
| >
| > In Excel I would do percentage calulations as you describe but only
| > because
| > modern tools such as Excel have made me lazy. I learnt these calculations
| > in
| > the days before spreadsheets and calculators when multiplyng a number by
| > 25%
| > using pencil and paper simply made (and still makes) no sense hence my
| > qualified answer to the OP that there are several methods.
| >
| > In my humble view it is much better that someone inderstands how a
| > percentage is arrived at then have them accept that =mynumber*25% will
| > work
| > it out for you.
| >
| > Regards,
| >
| > Mike H
| >
| > "Niek Otten" wrote:
| >
| >> Hi Mike,
| >>
| >> My standard answer:
| >> =============================================================
| >> About percentages in Excel
| >>
| >> Niek Otten, July 26 2006
| >>
| >> In Excel, percentages are stored as fractions; 15% is stored as
| >> 0.15, 100% as 1. That makes it easy to calculate with; just
| >> multiply a number with a percentage and you get what you need. No need to
| >> divide/multiply by 100. In fact, if you see a
| >> calculation with percentages which has the number 100 somewhere in the
| >> formula; be very careful, it might be wrong or at least use
| >> percentages in a way they weren't meant to be used in Excel.
| >> The conversion to a fraction happens automatically if you enter the
| >> % sign: if you enter "15%" (without the quotes) the
| >> value will be 0.15 and it will be displayed as 15%. If you then enter 12
| >> in the same cell, two things can happen: It will be the
| >> number 12 or 12%. What happens in your case depends on a setting:
| >> Tools>Options, Edit tab, "Enable automatic percent entry" (only
| >> Excel2000 and newer).
| >> All built-in functions of Excel and all the functions in Analysis
| >> Toolpak use this representation of percentages: be careful
| >> when supplying parameters to these functions; never use whole numbers
| >> (like 8), always use fractions (like 0.08 or, even better,
| >> 8%).
| >>
| >> Frequently Asked Questions:
| >>
| >> Q:
| >> I have A1 and B1. How do I get C1 to show B1 as a percentage of A1?
| >> A:
| >> Formula in C1: =B1/A1, Format as %
| >>
| >> Q:
| >> I have A1 and B1. How do I show the difference as a percentage in
| >> C1?
| >> A:
| >> As a percentage of A1: =(B1-A1)/A1, Format as %
| >> As a percentage of B1: =(B1-A1)/B1, Format as %
| >>
| >>
| >> --
| >> Kind regards,
| >>
| >> Niek Otten
| >> Microsoft MVP - Excel
| >>
| >> =============================================================
| >>
| >> | >> | There are a few ways and it may become more understandable to you if
| >> you
| >> | consider this. Dividing any number by 100 gives 1% of that number so in
| >> your
| >> | case
| >> |
| >> | 196/100*25 = 25% of 196
| >> |
| >> | to make this into an excel formula put an = sign in front
| >> |
| >> | =196/100*25
| >> |
| >> | Mike
| >> |
| >> | "adstarc" wrote:
| >> |
| >> | > I am new to excel and I am trying to find out how to do percentages.
| >> One of
| >> | > my questions is find out 25% of 196 and I am just drawing a blank!
| >>
| >>
| >>
|
|
 
M

Mike H

Niek,

Where we are; particulary in the UK in my view, is that children are leaving
school unable to manually perform even the simplest calculations without the
use of a calculator or spreadsheets and in part I believe this is due to the
use of and over reliance on those tools.

What we are trying to calculate is; once again in my view, irrelevant, what
matters is that the person learning the method understands how the
calculation is preformed and that we don't produce a generation that thinks
=Stdev(a1:a100) is how standards deviations are worked out.

Not intended to be argumentative just an honestly held opinion:)

Mike
 

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