-70.12% is the change from 502 to 150
Calculation steps:
[( 150 - 502 ) ÷ 502] x 100 = -70.12%
Formula
Percentage change = [(150 - 502) / 502] x 100
Subtract the new number by the original number
150 - 502 = -352
-352 ÷ 502 = -0.701195219123506
-0.701195219123506 x 100 = -70.12%