-81.29% is the change from 823 to 154
Calculation steps:
[( 154 - 823 ) ÷ 823] x 100 = -81.29%
Formula
Percentage change = [(154 - 823) / 823] x 100
Subtract the new number by the original number
154 - 823 = -669
-669 ÷ 823 = -0.8128797083839611
-0.8128797083839611 x 100 = -81.29%