48.26% is the change from 518 to 768
Calculation steps:
[( 768 - 518 ) ÷ 518] x 100 = 48.26%
Formula
Percentage change = [(768 - 518) / 518] x 100
Subtract the new number by the original number
768 - 518 = 250
250 ÷ 518 = 0.4826254826254826
0.4826254826254826 x 100 = 48.26%