-97.32% is the change from 820 to 22
Calculation steps:
[( 22 - 820 ) ÷ 820] x 100 = -97.32%
Formula
Percentage change = [(22 - 820) / 820] x 100
Subtract the new number by the original number
22 - 820 = -798
-798 ÷ 820 = -0.973170731707317
-0.973170731707317 x 100 = -97.32%