How to use XLOOKUP() to calculate commissions in Excel. Let’s review the commission requirements using real data this time. The first sale value is $1,208.

In Excel, there are two ways of calculating the weighted average with percentages: using the SUM function and using the SUMPRODUCT function. Let us have a look at these 2 methods in detail.

Launch Excel. Type "Investment Amount" in cell A1. Widen column A until it is slightly larger than the text in cell A1. Type "Money Gained from Investment" into cell B1.

Step 4: Another formula you can use to calculate percentage is simply applying the / key in between two cells. For example, to pass a driving theory test, I need to get 80% of the questions correct.