Calculate Unit % by Category

[c91364]

I have a report that is grouped by Category and on each detail line I need to show the % Units Sold per Category. I can't figure out how to get the total Units Sold per Category before I write the individual lines. Can someone, please, walk me through this process?

Thank you very much!!!

Chris

[Madhi]

Right click on the filed select summary and summary type as sum and Check the button "show as Percentage" and select again the filed