-71.12% is the change from 502 to 145
Calculation steps:
[( 145 - 502 ) ÷ 502] x 100 = -71.12%
Formula
Percentage change = [(145 - 502) / 502] x 100
Subtract the new number by the original number
145 - 502 = -357
-357 ÷ 502 = -0.7111553784860558
-0.7111553784860558 x 100 = -71.12%