-56.61% is the change from 590 to 256
Calculation steps:
[( 256 - 590 ) ÷ 590] x 100 = -56.61%
Formula
Percentage change = [(256 - 590) / 590] x 100
Subtract the new number by the original number
256 - 590 = -334
-334 ÷ 590 = -0.5661016949152542
-0.5661016949152542 x 100 = -56.61%