-65.74% is the change from 610 to 209
Calculation steps:
[( 209 - 610 ) ÷ 610] x 100 = -65.74%
Formula
Percentage change = [(209 - 610) / 610] x 100
Subtract the new number by the original number
209 - 610 = -401
-401 ÷ 610 = -0.6573770491803279
-0.6573770491803279 x 100 = -65.74%