-57.96% is the change from 609 to 256
Calculation steps:
[( 256 - 609 ) ÷ 609] x 100 = -57.96%
Formula
Percentage change = [(256 - 609) / 609] x 100
Subtract the new number by the original number
256 - 609 = -353
-353 ÷ 609 = -0.5796387520525451
-0.5796387520525451 x 100 = -57.96%