-91.54% is the change from 957 to 81
Calculation steps:
[( 81 - 957 ) ÷ 957] x 100 = -91.54%
Formula
Percentage change = [(81 - 957) / 957] x 100
Subtract the new number by the original number
81 - 957 = -876
-876 ÷ 957 = -0.9153605015673981
-0.9153605015673981 x 100 = -91.54%