-20.19% is the change from 822 to 656
Calculation steps:
[( 656 - 822 ) ÷ 822] x 100 = -20.19%
Formula
Percentage change = [(656 - 822) / 822] x 100
Subtract the new number by the original number
656 - 822 = -166
-166 ÷ 822 = -0.20194647201946472
-0.20194647201946472 x 100 = -20.19%