135.94% is the change from 256 to 604
Calculation steps:
[( 604 - 256 ) ÷ 256] x 100 = 135.94%
Formula
Percentage change = [(604 - 256) / 256] x 100
Subtract the new number by the original number
604 - 256 = 348
348 ÷ 256 = 1.359375
1.359375 x 100 = 135.94%