-81.5% is the change from 957 to 177
Calculation steps:
[( 177 - 957 ) ÷ 957] x 100 = -81.5%
Formula
Percentage change = [(177 - 957) / 957] x 100
Subtract the new number by the original number
177 - 957 = -780
-780 ÷ 957 = -0.8150470219435737
-0.8150470219435737 x 100 = -81.5%