Deposit/ Loan Weighted Interest Rate Report; Grouped Rates showing incorrectly

The Deposit and Loan Weighted Interest Rate Reports show Grouped and Grand Total Weighted Rates at 100 times the actual Weighted Rate.

In addition, once the Report is displayed, exporting the Report to Excel shows different Grouped and Grand Total Weighted Rates to that shown on screen. The rates in the Excel Workbook are a straight sum of the Accounts in the Group.