sum percent in Pivot table

Hi

I must to build a Pivot Table where there are a column is perecent of others 2 columns, when Build PT (pivottable) , It must to do percent from total example
DIFFERENCE is SPENT minus QTD, and PERCENT is DIFFERENCE/QTD

QTD SPENT DIFFERENCE PERCENT
20 10 -10 -50%
40 60 20 +50%
30 45 15 +50%


When I built PT the sum show
90 130 40 50%

I would like show
90 130 40 40/90 ===> 44,44%

Is there some way to do it ?

Like this?

Thank

But I must show sum of percent like sample in cell E5