23.77% is the change from 509 to 630
Calculation steps:
[( 630 - 509 ) ÷ 509] x 100 = 23.77%
Formula
Percentage change = [(630 - 509) / 509] x 100
Subtract the new number by the original number
630 - 509 = 121
121 ÷ 509 = 0.23772102161100198
0.23772102161100198 x 100 = 23.77%