-56.68% is the change from 591 to 256
Calculation steps:
[( 256 - 591 ) ÷ 591] x 100 = -56.68%
Formula
Percentage change = [(256 - 591) / 591] x 100
Subtract the new number by the original number
256 - 591 = -335
-335 ÷ 591 = -0.5668358714043993
-0.5668358714043993 x 100 = -56.68%