-96.47% is the change from 877 to 31
Calculation steps:
[( 31 - 877 ) ÷ 877] x 100 = -96.47%
Formula
Percentage change = [(31 - 877) / 877] x 100
Subtract the new number by the original number
31 - 877 = -846
-846 ÷ 877 = -0.9646522234891676
-0.9646522234891676 x 100 = -96.47%