2744.44% is the change from 9 to 256
Calculation steps:
[( 256 - 9 ) ÷ 9] x 100 = 2744.44%
Formula
Percentage change = [(256 - 9) / 9] x 100
Subtract the new number by the original number
256 - 9 = 247
247 ÷ 9 = 27.444444444444443
27.444444444444443 x 100 = 2744.44%