-57.05% is the change from 596 to 256
Calculation steps:
[( 256 - 596 ) ÷ 596] x 100 = -57.05%
Formula
Percentage change = [(256 - 596) / 596] x 100
Subtract the new number by the original number
256 - 596 = -340
-340 ÷ 596 = -0.5704697986577181
-0.5704697986577181 x 100 = -57.05%