Reconcile Allocated Budget with %, Budget with % and Remaining Budget % in the Scoreboard view

The requirement is that the customer wants to reconcile Allocated Budget with %, Budget with % and Remaining Budget % in the Scoreboard view.

Allocated Budget with % is 3.6%
Available Budget with % is 4%
Remaining Budget with % should be 0.4%, so it would be completely reconciled. (3.6%+0.4% = 4%).

However, remaining budget % is 2% based on the calculation Remaining Budget/Available Budget*100. We need to change the calculation to Remaining Budget/Eligible Salary*100 to be able reconcile on the score view. However, as per the screenshots attached below, Oracle does not show any calculation field. We are unable to update the calculation.