The formula is
=IF(ISERROR((B15+B18)-(B16+B18)/(B15+B18)=TRUE),"",(B15+B18)-(B16+B18)/(B15+B18))
Values are B15 = 10
B16 = 1
B18 = 1
Number format is percent with no decimal.
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Rich


"Rich" wrote:

I am using a formula to calculate service level percentage. The answer
displays as 1082% and should be 82%

Thanks for the help,
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Rich