-96.29% is the change from 836 to 31
Calculation steps:
[( 31 - 836 ) ÷ 836] x 100 = -96.29%
Formula
Percentage change = [(31 - 836) / 836] x 100
Subtract the new number by the original number
31 - 836 = -805
-805 ÷ 836 = -0.9629186602870813
-0.9629186602870813 x 100 = -96.29%