-66.23% is the change from 610 to 206
Calculation steps:
[( 206 - 610 ) ÷ 610] x 100 = -66.23%
Formula
Percentage change = [(206 - 610) / 610] x 100
Subtract the new number by the original number
206 - 610 = -404
-404 ÷ 610 = -0.6622950819672131
-0.6622950819672131 x 100 = -66.23%