-31.55% is the change from 843 to 577
Calculation steps:
[( 577 - 843 ) ÷ 843] x 100 = -31.55%
Formula
Percentage change = [(577 - 843) / 843] x 100
Subtract the new number by the original number
577 - 843 = -266
-266 ÷ 843 = -0.3155397390272835
-0.3155397390272835 x 100 = -31.55%