Hi Amrita,
'PRZNT' 'D' evaluates the age type as percentage of other Base Wage type. So, your WT5007 must valuated on some base wage type maintain in T539J.
Check T511 and verify whether have maintained the 'unit' field as 'PERCENT. Also In IT0008 when you enter percentage in IT0008, it will get calculate based on the percentage and T539J table.
Please provide screenshots of T539J & T511 tables. The only difference between PRZNT & SUMME is that you have maintain percentage in IT0008.
Thanks,
Madhav.