52.67% is the change from 505 to 771
Calculation steps:
[( 771 - 505 ) ÷ 505] x 100 = 52.67%
Formula
Percentage change = [(771 - 505) / 505] x 100
Subtract the new number by the original number
771 - 505 = 266
266 ÷ 505 = 0.5267326732673268
0.5267326732673268 x 100 = 52.67%