48.27% is the change from 520 to 771
Calculation steps:
[( 771 - 520 ) ÷ 520] x 100 = 48.27%
Formula
Percentage change = [(771 - 520) / 520] x 100
Subtract the new number by the original number
771 - 520 = 251
251 ÷ 520 = 0.4826923076923077
0.4826923076923077 x 100 = 48.27%