51.96% is the change from 510 to 775
Calculation steps:
[( 775 - 510 ) ÷ 510] x 100 = 51.96%
Formula
Percentage change = [(775 - 510) / 510] x 100
Subtract the new number by the original number
775 - 510 = 265
265 ÷ 510 = 0.5196078431372549
0.5196078431372549 x 100 = 51.96%