Incorrect Income percentages

I am new to Sage 300 and new to my role as Comptroller for my employer.  I was surprised to find our Income Statement total income percentage for the month and YTD do not equal 100%.  For example, for May, the total income % is 103.53%.  For YTD, the income % is 97.33%.  This is also affecting our GM% calculations.  I've looked at the accumulator accounts, and they are correct.  Dollar-wise, the total income does equal the sum of the individual components.  But something is happening with the percentage calculations for each income line item.  For example, the first line item below should be 37.36% and not 38.68%.  The rest of the line items are also incorrect.