-85.97% is the change from 877 to 123
Calculation steps:
[( 123 - 877 ) ÷ 877] x 100 = -85.97%
Formula
Percentage change = [(123 - 877) / 877] x 100
Subtract the new number by the original number
123 - 877 = -754
-754 ÷ 877 = -0.8597491448118586
-0.8597491448118586 x 100 = -85.97%