Try

=A1*(1-A2)


--
Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting, LLC
www.cpearson.com


"sdmccabe" wrote in message
...
Can I make a calculation of the selling price of an item to
arrive at the
cost of the item while using another cell to input a desired
mark-up
percentage, without creating a separate cell that contains
gross margin?

For example, cell A1 contain the number 100, cell A2 is used to
input a
desire mark-up percentage (20 percent). I would like cell A3
to equal 80.