-74.39% is the change from 863 to 221
Calculation steps:
[( 221 - 863 ) ÷ 863] x 100 = -74.39%
Formula
Percentage change = [(221 - 863) / 863] x 100
Subtract the new number by the original number
221 - 863 = -642
-642 ÷ 863 = -0.7439165701042874
-0.7439165701042874 x 100 = -74.39%