-31.32% is the change from 728 to 500
Calculation steps:
[( 500 - 728 ) ÷ 728] x 100 = -31.32%
Formula
Percentage change = [(500 - 728) / 728] x 100
Subtract the new number by the original number
500 - 728 = -228
-228 ÷ 728 = -0.3131868131868132
-0.3131868131868132 x 100 = -31.32%