125.78% is the change from 256 to 578
Calculation steps:
[( 578 - 256 ) ÷ 256] x 100 = 125.78%
Formula
Percentage change = [(578 - 256) / 256] x 100
Subtract the new number by the original number
578 - 256 = 322
322 ÷ 256 = 1.2578125
1.2578125 x 100 = 125.78%