-72.93% is the change from 820 to 222
Calculation steps:
[( 222 - 820 ) ÷ 820] x 100 = -72.93%
Formula
Percentage change = [(222 - 820) / 820] x 100
Subtract the new number by the original number
222 - 820 = -598
-598 ÷ 820 = -0.7292682926829268
-0.7292682926829268 x 100 = -72.93%