-43.98% is the change from 457 to 256
Calculation steps:
[( 256 - 457 ) ÷ 457] x 100 = -43.98%
Formula
Percentage change = [(256 - 457) / 457] x 100
Subtract the new number by the original number
256 - 457 = -201
-201 ÷ 457 = -0.43982494529540483
-0.43982494529540483 x 100 = -43.98%