-63.71% is the change from 609 to 221
Calculation steps:
[( 221 - 609 ) ÷ 609] x 100 = -63.71%
Formula
Percentage change = [(221 - 609) / 609] x 100
Subtract the new number by the original number
221 - 609 = -388
-388 ÷ 609 = -0.6371100164203612
-0.6371100164203612 x 100 = -63.71%