-96.54% is the change from 897 to 31
Calculation steps:
[( 31 - 897 ) ÷ 897] x 100 = -96.54%
Formula
Percentage change = [(31 - 897) / 897] x 100
Subtract the new number by the original number
31 - 897 = -866
-866 ÷ 897 = -0.9654403567447045
-0.9654403567447045 x 100 = -96.54%