-42.73% is the change from 447 to 256
Calculation steps:
[( 256 - 447 ) ÷ 447] x 100 = -42.73%
Formula
Percentage change = [(256 - 447) / 447] x 100
Subtract the new number by the original number
256 - 447 = -191
-191 ÷ 447 = -0.4272930648769575
-0.4272930648769575 x 100 = -42.73%