153.13% is the change from 256 to 648
Calculation steps:
[( 648 - 256 ) ÷ 256] x 100 = 153.13%
Formula
Percentage change = [(648 - 256) / 256] x 100
Subtract the new number by the original number
648 - 256 = 392
392 ÷ 256 = 1.53125
1.53125 x 100 = 153.13%