-66.82% is the change from 663 to 220
Calculation steps:
[( 220 - 663 ) ÷ 663] x 100 = -66.82%
Formula
Percentage change = [(220 - 663) / 663] x 100
Subtract the new number by the original number
220 - 663 = -443
-443 ÷ 663 = -0.6681749622926093
-0.6681749622926093 x 100 = -66.82%