How to round up percentage values in a pivot table that add up to 100?

Please forgive me if I don't describe my problem accurately, I've been forced into this and I haven't used excel for many years.

I have several survey responses that I'm trying to make pie charts out of. I have mapped these to a pivot table, I think correctly, and now I'm trying to make pie charts for each question.

What I can't solve for the life of me, is how to perform rounding at the percentage values that adds up to 100. Here is one sample.

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If I format the number to 0 decimals, the percentages add up to 99%. If I try to ROUNDUP the pivot table value cells I get "You cannot edit the formula for a calculated item while custom calculations is used". I don't want to write them by hand because there's several questions.

Accuracy doesn't really matter either. If I can push the highest percentage to fill the rest up to 100, I'm fine with that!

Thank you for any help!

PS: I'm so happy Excel forum still exists! I used it first around 10 years ago, and it's the only website that remembers me every year on my birthday!

Welcome to the Forum mechanicarts !

The rounding error you are describing is an inherent mathematical problem with rounding; it's not an Excel problem. However, here is a solution to round the largest number in such a way as to force the total to be 100%. This assumes your percentage numbers are in column A.

A better solution might be possible if you attach your file with sample data. See yellow banner at the top of the page.

Values as displayed

	A	B	C
1	Original Data	Rounded numbers	Adjusted numbers
2	71.43%	71%	72%
3	7.14%	7%	7%
4	14.29%	14%	14%
5	7.14%	7%	7%
6	0.00%	0%	0%
7	100.0%	99.0%	100.0%

Underlying formulas

	A	B	C
1	Original Data	Rounded numbers	Adjusted numbers
2	0.7143	=ROUND(A2,2)	{=IF(A2=LARGE($A$2:$A$6,1),1-(SUM(ROUND($A$2:$A$6,2))-ROUND(A2,2)),ROUND(A2,2))}
3	0.0714	=ROUND(A3,2)	{=IF(A3=LARGE($A$2:$A$6,1),1-(SUM(ROUND($A$2:$A$6,2))-ROUND(A3,2)),ROUND(A3,2))}
4	0.1429	=ROUND(A4,2)	{=IF(A4=LARGE($A$2:$A$6,1),1-(SUM(ROUND($A$2:$A$6,2))-ROUND(A4,2)),ROUND(A4,2))}
5	0.0714	=ROUND(A5,2)	{=IF(A5=LARGE($A$2:$A$6,1),1-(SUM(ROUND($A$2:$A$6,2))-ROUND(A5,2)),ROUND(A5,2))}
6	0	=ROUND(A6,2)	{=IF(A6=LARGE($A$2:$A$6,1),1-(SUM(ROUND($A$2:$A$6,2))-ROUND(A6,2)),ROUND(A6,2))}
7	=SUM(A2:A6)	=SUM(B2:B6)	=SUM(C2:C6)

This is an array formula. If you are not using Excel 365, after typing in the formula, do not hit ENTER--hit CTRL+SHIFT+ENTER. You have done it correctly if the formula in the formula box has {braces} around it. You cannot type in the braces; they are just an indicator that it is an array formula.