52.07% is the change from 507 to 771
Calculation steps:
[( 771 - 507 ) ÷ 507] x 100 = 52.07%
Formula
Percentage change = [(771 - 507) / 507] x 100
Subtract the new number by the original number
771 - 507 = 264
264 ÷ 507 = 0.5207100591715976
0.5207100591715976 x 100 = 52.07%