-56.78% is the change from 590 to 255
Calculation steps:
[( 255 - 590 ) ÷ 590] x 100 = -56.78%
Formula
Percentage change = [(255 - 590) / 590] x 100
Subtract the new number by the original number
255 - 590 = -335
-335 ÷ 590 = -0.5677966101694916
-0.5677966101694916 x 100 = -56.78%