-55.79% is the change from 579 to 256
Calculation steps:
[( 256 - 579 ) ÷ 579] x 100 = -55.79%
Formula
Percentage change = [(256 - 579) / 579] x 100
Subtract the new number by the original number
256 - 579 = -323
-323 ÷ 579 = -0.5578583765112263
-0.5578583765112263 x 100 = -55.79%