So first we can use a formula to find this out:
Commission amount= sales price* commission percentage
We need to find the commission percentage so we rearrange the equation and plug in the known values:
Commission amount/ sales price = commission percentage
532/2800= commission percentage
Solve the equation: 532/2800= 0.19
0.19 can be converted into percentage as: 0.19*100= 19%
Therefore commission rate= 19%