60.06% is the change from 318 to 509
Calculation steps:
[( 509 - 318 ) ÷ 318] x 100 = 60.06%
Formula
Percentage change = [(509 - 318) / 318] x 100
Subtract the new number by the original number
509 - 318 = 191
191 ÷ 318 = 0.60062893081761
0.60062893081761 x 100 = 60.06%