19.06% is the change from 509 to 606
Calculation steps:
[( 606 - 509 ) ÷ 509] x 100 = 19.06%
Formula
Percentage change = [(606 - 509) / 509] x 100
Subtract the new number by the original number
606 - 509 = 97
97 ÷ 509 = 0.1905697445972495
0.1905697445972495 x 100 = 19.06%