-96.36% is the change from 220 to 8
Calculation steps:
[( 8 - 220 ) ÷ 220] x 100 = -96.36%
Formula
Percentage change = [(8 - 220) / 220] x 100
Subtract the new number by the original number
8 - 220 = -212
-212 ÷ 220 = -0.9636363636363636
-0.9636363636363636 x 100 = -96.36%