-68.53% is the change from 502 to 158
Calculation steps:
[( 158 - 502 ) ÷ 502] x 100 = -68.53%
Formula
Percentage change = [(158 - 502) / 502] x 100
Subtract the new number by the original number
158 - 502 = -344
-344 ÷ 502 = -0.6852589641434262
-0.6852589641434262 x 100 = -68.53%