determining which factor had the most impact with an excel formula

Hello. I am multiplying two rates to get to a TOTAL. In the next cells, those rates changes and the TOTAL changes. Is there a formula in excel that I can create that will show the impact that each movement had on the TOTAL? Spreadsheet attached. Thanks.

Do you just mean

=(D3-C3)/C3

No. There is a total. If you multiply the first two rows, you get that total. Then in the next column, same thing. How can you say which movement had a bigger impact on the change in the total? Gracias.

I don't understand, in a simple multiplication, they both surely have the same impact.