-72.91% is the change from 502 to 136
Calculation steps:
[( 136 - 502 ) ÷ 502] x 100 = -72.91%
Formula
Percentage change = [(136 - 502) / 502] x 100
Subtract the new number by the original number
136 - 502 = -366
-366 ÷ 502 = -0.7290836653386454
-0.7290836653386454 x 100 = -72.91%