-23.01% is the change from 843 to 649
Calculation steps:
[( 649 - 843 ) ÷ 843] x 100 = -23.01%
Formula
Percentage change = [(649 - 843) / 843] x 100
Subtract the new number by the original number
649 - 843 = -194
-194 ÷ 843 = -0.23013048635824437
-0.23013048635824437 x 100 = -23.01%