-96.29% is the change from 835 to 31
Calculation steps:
[( 31 - 835 ) ÷ 835] x 100 = -96.29%
Formula
Percentage change = [(31 - 835) / 835] x 100
Subtract the new number by the original number
31 - 835 = -804
-804 ÷ 835 = -0.962874251497006
-0.962874251497006 x 100 = -96.29%