-70.62% is the change from 531 to 156
Calculation steps:
[( 156 - 531 ) ÷ 531] x 100 = -70.62%
Formula
Percentage change = [(156 - 531) / 531] x 100
Subtract the new number by the original number
156 - 531 = -375
-375 ÷ 531 = -0.7062146892655368
-0.7062146892655368 x 100 = -70.62%