-21.62% is the change from 837 to 656
Calculation steps:
[( 656 - 837 ) ÷ 837] x 100 = -21.62%
Formula
Percentage change = [(656 - 837) / 837] x 100
Subtract the new number by the original number
656 - 837 = -181
-181 ÷ 837 = -0.2162485065710872
-0.2162485065710872 x 100 = -21.62%