-56.24% is the change from 585 to 256
Calculation steps:
[( 256 - 585 ) ÷ 585] x 100 = -56.24%
Formula
Percentage change = [(256 - 585) / 585] x 100
Subtract the new number by the original number
256 - 585 = -329
-329 ÷ 585 = -0.5623931623931624
-0.5623931623931624 x 100 = -56.24%