48.74% is the change from 515 to 766
Calculation steps:
[( 766 - 515 ) ÷ 515] x 100 = 48.74%
Formula
Percentage change = [(766 - 515) / 515] x 100
Subtract the new number by the original number
766 - 515 = 251
251 ÷ 515 = 0.487378640776699
0.487378640776699 x 100 = 48.74%