Reports and Math Equations

I have a matrix report that I run on a monthly basis that gives me time entry by hour type by resource and then totals it at the far right.  My question is, I do not want to push this into Excel.  Is there any way that I can add a column and have Workfront know the available working hours for the month and divide that by the user's total and then show that in % format?  I am new to calculated fields but was hoping there was already something like this out there.  Thanks!