-84.88% is the change from 820 to 124
Calculation steps:
[( 124 - 820 ) ÷ 820] x 100 = -84.88%
Formula
Percentage change = [(124 - 820) / 820] x 100
Subtract the new number by the original number
124 - 820 = -696
-696 ÷ 820 = -0.848780487804878
-0.848780487804878 x 100 = -84.88%