51.76% is the change from 510 to 774
Calculation steps:
[( 774 - 510 ) ÷ 510] x 100 = 51.76%
Formula
Percentage change = [(774 - 510) / 510] x 100
Subtract the new number by the original number
774 - 510 = 264
264 ÷ 510 = 0.5176470588235295
0.5176470588235295 x 100 = 51.76%