Pivot Table Query

Hello,
If I construct a pivot tables that looks as follows :

Name Total Current 30 Days 60 Days 90 Days
Mr Jones 5000 1000 0 500 3500
Mr Smith 1000 0 500 500 0
Total 6000 1000 500 1000 3500

Is it possible to insert percentage fields as follows :

Name Total Current 30 Days 60 Days 90 Days
Mr Jones 5000 1000 0 500 3500
100% 20% 0% 10% 70%
Mr Smith 1000 0 500 500 0
100% 0% 50% 50% 0%
Total 6000 1000 500 1000 3500
100% 16.6% 8.3% 16.6% 58.3%

Thank you for your help!