52.94% is the change from 510 to 780
Calculation steps:
[( 780 - 510 ) ÷ 510] x 100 = 52.94%
Formula
Percentage change = [(780 - 510) / 510] x 100
Subtract the new number by the original number
780 - 510 = 270
270 ÷ 510 = 0.5294117647058824
0.5294117647058824 x 100 = 52.94%