-96.4% is the change from 862 to 31
Calculation steps:
[( 31 - 862 ) ÷ 862] x 100 = -96.4%
Formula
Percentage change = [(31 - 862) / 862] x 100
Subtract the new number by the original number
31 - 862 = -831
-831 ÷ 862 = -0.9640371229698376
-0.9640371229698376 x 100 = -96.4%