-21.85% is the change from 531 to 415
Calculation steps:
[( 415 - 531 ) ÷ 531] x 100 = -21.85%
Formula
Percentage change = [(415 - 531) / 531] x 100
Subtract the new number by the original number
415 - 531 = -116
-116 ÷ 531 = -0.2184557438794727
-0.2184557438794727 x 100 = -21.85%