-7.24% is the change from 539 to 500
Calculation steps:
[( 500 - 539 ) ÷ 539] x 100 = -7.24%
Formula
Percentage change = [(500 - 539) / 539] x 100
Subtract the new number by the original number
500 - 539 = -39
-39 ÷ 539 = -0.07235621521335807
-0.07235621521335807 x 100 = -7.24%