-56.34% is the change from 584 to 255
Calculation steps:
[( 255 - 584 ) ÷ 584] x 100 = -56.34%
Formula
Percentage change = [(255 - 584) / 584] x 100
Subtract the new number by the original number
255 - 584 = -329
-329 ÷ 584 = -0.5633561643835616
-0.5633561643835616 x 100 = -56.34%