-84.01% is the change from 863 to 138
Calculation steps:
[( 138 - 863 ) ÷ 863] x 100 = -84.01%
Formula
Percentage change = [(138 - 863) / 863] x 100
Subtract the new number by the original number
138 - 863 = -725
-725 ÷ 863 = -0.8400926998841252
-0.8400926998841252 x 100 = -84.01%