-82.1% is the change from 877 to 157
Calculation steps:
[( 157 - 877 ) ÷ 877] x 100 = -82.1%
Formula
Percentage change = [(157 - 877) / 877] x 100
Subtract the new number by the original number
157 - 877 = -720
-720 ÷ 877 = -0.8209806157354618
-0.8209806157354618 x 100 = -82.1%