-96.28% is the change from 833 to 31
Calculation steps:
[( 31 - 833 ) ÷ 833] x 100 = -96.28%
Formula
Percentage change = [(31 - 833) / 833] x 100
Subtract the new number by the original number
31 - 833 = -802
-802 ÷ 833 = -0.9627851140456183
-0.9627851140456183 x 100 = -96.28%