-82.33% is the change from 877 to 155
Calculation steps:
[( 155 - 877 ) ÷ 877] x 100 = -82.33%
Formula
Percentage change = [(155 - 877) / 877] x 100
Subtract the new number by the original number
155 - 877 = -722
-722 ÷ 877 = -0.8232611174458381
-0.8232611174458381 x 100 = -82.33%