I'm still pretty new to Sub summary calculations, so bear with me.

The above calculation for Closing % is correct only on the bottom line.

2016 should be 38.56%. (59 sales / 153 demos)

2017 should be 35.07%. (47 sales / 134 demos)

I feel like I'm missing something and I've tried a variety of GetSummary solutions but I really don't have any idea why they aren't working.

What am I missing?

What have you tried with the GetSummary function?

have you tried something like?

GetSummary ( ASS.Closed sum ; SortField ) / GetSummary ( Demos Summary ; SortField )

SortField is the field your Sub Summary part is based on

-- Orlando