-86.09% is the change from 877 to 122
Calculation steps:
[( 122 - 877 ) ÷ 877] x 100 = -86.09%
Formula
Percentage change = [(122 - 877) / 877] x 100
Subtract the new number by the original number
122 - 877 = -755
-755 ÷ 877 = -0.8608893956670467
-0.8608893956670467 x 100 = -86.09%