-96.34% is the change from 847 to 31
Calculation steps:
[( 31 - 847 ) ÷ 847] x 100 = -96.34%
Formula
Percentage change = [(31 - 847) / 847] x 100
Subtract the new number by the original number
31 - 847 = -816
-816 ÷ 847 = -0.9634002361275088
-0.9634002361275088 x 100 = -96.34%