-69.1% is the change from 877 to 271
Calculation steps:
[( 271 - 877 ) ÷ 877] x 100 = -69.1%
Formula
Percentage change = [(271 - 877) / 877] x 100
Subtract the new number by the original number
271 - 877 = -606
-606 ÷ 877 = -0.6909920182440137
-0.6909920182440137 x 100 = -69.1%