101.95% is the change from 256 to 517
Calculation steps:
[( 517 - 256 ) ÷ 256] x 100 = 101.95%
Formula
Percentage change = [(517 - 256) / 256] x 100
Subtract the new number by the original number
517 - 256 = 261
261 ÷ 256 = 1.01953125
1.01953125 x 100 = 101.95%