### Title

Calculate a percentage in a trailing grand summary

### Post

Calculating the percentage in each sub summary is easy - do get summaries for each break depending on how each subsummary is sorted.

But, since the trailing grand summary isn't sorted, the get summary functions don't work. and, far as I know, you can't use a summary field in a calculation without the get summary function.

So, how would I do this? Thanks for your help!

If you have a summary field for each total, you can use those two fields in a calculation field to compute your percentage.

SummaryFieldforA / SummaryFieldForB

Then format the field on the Inspector's data tab to use a percent format.