31.04% is the change from 509 to 667
Calculation steps:
[( 667 - 509 ) ÷ 509] x 100 = 31.04%
Formula
Percentage change = [(667 - 509) / 509] x 100
Subtract the new number by the original number
667 - 509 = 158
158 ÷ 509 = 0.3104125736738703
0.3104125736738703 x 100 = 31.04%