-65.74% is the change from 502 to 172
Calculation steps:
[( 172 - 502 ) ÷ 502] x 100 = -65.74%
Formula
Percentage change = [(172 - 502) / 502] x 100
Subtract the new number by the original number
172 - 502 = -330
-330 ÷ 502 = -0.6573705179282868
-0.6573705179282868 x 100 = -65.74%