-88.76% is the change from 863 to 97
Calculation steps:
[( 97 - 863 ) ÷ 863] x 100 = -88.76%
Formula
Percentage change = [(97 - 863) / 863] x 100
Subtract the new number by the original number
97 - 863 = -766
-766 ÷ 863 = -0.8876013904982619
-0.8876013904982619 x 100 = -88.76%