175% is the change from 256 to 704
Calculation steps:
[( 704 - 256 ) ÷ 256] x 100 = 175%
Formula
Percentage change = [(704 - 256) / 256] x 100
Subtract the new number by the original number
704 - 256 = 448
448 ÷ 256 = 1.75
1.75 x 100 = 175%
Example