formatting the difference between two cells

[Hollywood003]

I have two cells with two different numbers and I am trying to have Excel
format the difference between the cells.

 

[BSc Chem Eng Rick]

What do you mean by format the difference? Please elaborate.

 

[David Biddulph]

In Excel the symbol for minus is the minus sign (-), so the difference
between A1 and B1 is =B1-A1.
If you want only the magnitude of the difference, use =ABS(B1-A1)