50.59% is the change from 510 to 768
Calculation steps:
[( 768 - 510 ) ÷ 510] x 100 = 50.59%
Formula
Percentage change = [(768 - 510) / 510] x 100
Subtract the new number by the original number
768 - 510 = 258
258 ÷ 510 = 0.5058823529411764
0.5058823529411764 x 100 = 50.59%