-97.57% is the change from 822 to 20
Calculation steps:
[( 20 - 822 ) ÷ 822] x 100 = -97.57%
Formula
Percentage change = [(20 - 822) / 822] x 100
Subtract the new number by the original number
20 - 822 = -802
-802 ÷ 822 = -0.975669099756691
-0.975669099756691 x 100 = -97.57%