-66.56% is the change from 610 to 204
Calculation steps:
[( 204 - 610 ) ÷ 610] x 100 = -66.56%
Formula
Percentage change = [(204 - 610) / 610] x 100
Subtract the new number by the original number
204 - 610 = -406
-406 ÷ 610 = -0.6655737704918033
-0.6655737704918033 x 100 = -66.56%