27.31% is the change from 509 to 648
Calculation steps:
[( 648 - 509 ) ÷ 509] x 100 = 27.31%
Formula
Percentage change = [(648 - 509) / 509] x 100
Subtract the new number by the original number
648 - 509 = 139
139 ÷ 509 = 0.2730844793713163
0.2730844793713163 x 100 = 27.31%