-84.15% is the change from 877 to 139
Calculation steps:
[( 139 - 877 ) ÷ 877] x 100 = -84.15%
Formula
Percentage change = [(139 - 877) / 877] x 100
Subtract the new number by the original number
139 - 877 = -738
-738 ÷ 877 = -0.8415051311288484
-0.8415051311288484 x 100 = -84.15%