-65.68% is the change from 609 to 209
Calculation steps:
[( 209 - 609 ) ÷ 609] x 100 = -65.68%
Formula
Percentage change = [(209 - 609) / 609] x 100
Subtract the new number by the original number
209 - 609 = -400
-400 ÷ 609 = -0.6568144499178982
-0.6568144499178982 x 100 = -65.68%