-30.37% is the change from 843 to 587
Calculation steps:
[( 587 - 843 ) ÷ 843] x 100 = -30.37%
Formula
Percentage change = [(587 - 843) / 843] x 100
Subtract the new number by the original number
587 - 843 = -256
-256 ÷ 843 = -0.3036773428232503
-0.3036773428232503 x 100 = -30.37%