-21.28% is the change from 531 to 418
Calculation steps:
[( 418 - 531 ) ÷ 531] x 100 = -21.28%
Formula
Percentage change = [(418 - 531) / 531] x 100
Subtract the new number by the original number
418 - 531 = -113
-113 ÷ 531 = -0.2128060263653484
-0.2128060263653484 x 100 = -21.28%