-63.88% is the change from 609 to 220
Calculation steps:
[( 220 - 609 ) ÷ 609] x 100 = -63.88%
Formula
Percentage change = [(220 - 609) / 609] x 100
Subtract the new number by the original number
220 - 609 = -389
-389 ÷ 609 = -0.638752052545156
-0.638752052545156 x 100 = -63.88%