196.09% is the change from 256 to 758
Calculation steps:
[( 758 - 256 ) ÷ 256] x 100 = 196.09%
Formula
Percentage change = [(758 - 256) / 256] x 100
Subtract the new number by the original number
758 - 256 = 502
502 ÷ 256 = 1.9609375
1.9609375 x 100 = 196.09%