49.81% is the change from 520 to 779
Calculation steps:
[( 779 - 520 ) ÷ 520] x 100 = 49.81%
Formula
Percentage change = [(779 - 520) / 520] x 100
Subtract the new number by the original number
779 - 520 = 259
259 ÷ 520 = 0.4980769230769231
0.4980769230769231 x 100 = 49.81%