-84.93% is the change from 823 to 124
Calculation steps:
[( 124 - 823 ) ÷ 823] x 100 = -84.93%
Formula
Percentage change = [(124 - 823) / 823] x 100
Subtract the new number by the original number
124 - 823 = -699
-699 ÷ 823 = -0.8493317132442284
-0.8493317132442284 x 100 = -84.93%