-96.4% is the change from 860 to 31
Calculation steps:
[( 31 - 860 ) ÷ 860] x 100 = -96.4%
Formula
Percentage change = [(31 - 860) / 860] x 100
Subtract the new number by the original number
31 - 860 = -829
-829 ÷ 860 = -0.963953488372093
-0.963953488372093 x 100 = -96.4%