-57.87% is the change from 610 to 257
Calculation steps:
[( 257 - 610 ) ÷ 610] x 100 = -57.87%
Formula
Percentage change = [(257 - 610) / 610] x 100
Subtract the new number by the original number
257 - 610 = -353
-353 ÷ 610 = -0.578688524590164
-0.578688524590164 x 100 = -57.87%