Daily Average from Continuous Monthly Totals

Working with employee productivity and they are required to perform to specific requirements. I am looking to bring our reporting into this century.

I have monthly totals that update every month and I want a daily average to adjust as the months are added not by 12 months from day 1.

I'm actually in need for a couple different formulas. Percentage of denied and approved refunds and the daily average. Remember all totals will go up every month when those are added. I tried the percentage formula but was not getting the right number and 2 zeros were added and could not remove them with the decrease decimal option.

Any help or suggestions are welcome and appreciated.