-84.75% is the change from 813 to 124
Calculation steps:
[( 124 - 813 ) ÷ 813] x 100 = -84.75%
Formula
Percentage change = [(124 - 813) / 813] x 100
Subtract the new number by the original number
124 - 813 = -689
-689 ÷ 813 = -0.8474784747847478
-0.8474784747847478 x 100 = -84.75%