19.25% is the change from 509 to 607
Calculation steps:
[( 607 - 509 ) ÷ 509] x 100 = 19.25%
Formula
Percentage change = [(607 - 509) / 509] x 100
Subtract the new number by the original number
607 - 509 = 98
98 ÷ 509 = 0.1925343811394892
0.1925343811394892 x 100 = 19.25%