-97.68% is the change from 863 to 20
Calculation steps:
[( 20 - 863 ) ÷ 863] x 100 = -97.68%
Formula
Percentage change = [(20 - 863) / 863] x 100
Subtract the new number by the original number
20 - 863 = -843
-843 ÷ 863 = -0.9768250289687138
-0.9768250289687138 x 100 = -97.68%