-24.56% is the change from 843 to 636
Calculation steps:
[( 636 - 843 ) ÷ 843] x 100 = -24.56%
Formula
Percentage change = [(636 - 843) / 843] x 100
Subtract the new number by the original number
636 - 843 = -207
-207 ÷ 843 = -0.24555160142348753
-0.24555160142348753 x 100 = -24.56%