186.72% is the change from 256 to 734
Calculation steps:
[( 734 - 256 ) ÷ 256] x 100 = 186.72%
Formula
Percentage change = [(734 - 256) / 256] x 100
Subtract the new number by the original number
734 - 256 = 478
478 ÷ 256 = 1.8671875
1.8671875 x 100 = 186.72%