-96.52% is the change from 891 to 31
Calculation steps:
[( 31 - 891 ) ÷ 891] x 100 = -96.52%
Formula
Percentage change = [(31 - 891) / 891] x 100
Subtract the new number by the original number
31 - 891 = -860
-860 ÷ 891 = -0.9652076318742986
-0.9652076318742986 x 100 = -96.52%