27.06% is the change from 510 to 648
Calculation steps:
[( 648 - 510 ) ÷ 510] x 100 = 27.06%
Formula
Percentage change = [(648 - 510) / 510] x 100
Subtract the new number by the original number
648 - 510 = 138
138 ÷ 510 = 0.27058823529411763
0.27058823529411763 x 100 = 27.06%