Hi ,
Welcome to this Microsoft Project newsgroup
You can do this with a customised toolbar and macros. Start with
View/Tables/Work or create a view showing the %Work Complete column.
You'll then need to record a macro putting (say) 25 in that column. You can
then edit and rename the macro for each of 0, 50,75,100%, ending up with 5
macros. You can then create a new toolbar and drag these macros onto it.
Then you could change the tool buttons to reflect the %ages. Full details
on this can be found in my series on Microsoft Project in the TechTrax
ezine, particularly #16 on Macros, at this site:
http://tinyurl.com/2xbhc
or this:
http://pubs.logicalexpressions.com/Pub0009/LPMFrame.asp?CMD=ArticleSearch&AUTH=23
(Perhaps you'd care to rate the article before leaving the site,

Thanks.)
FAQs, companion products and other useful Project information can be seen at
this web address: <
http://www.mvps.org/project/>
Hope this helps - please let us know how you get on
Mike Glen
MS Project MVP