51.77% is the change from 508 to 771
Calculation steps:
[( 771 - 508 ) ÷ 508] x 100 = 51.77%
Formula
Percentage change = [(771 - 508) / 508] x 100
Subtract the new number by the original number
771 - 508 = 263
263 ÷ 508 = 0.5177165354330708
0.5177165354330708 x 100 = 51.77%