-21.31% is the change from 502 to 395
Calculation steps:
[( 395 - 502 ) ÷ 502] x 100 = -21.31%
Formula
Percentage change = [(395 - 502) / 502] x 100
Subtract the new number by the original number
395 - 502 = -107
-107 ÷ 502 = -0.21314741035856574
-0.21314741035856574 x 100 = -21.31%