ANSWER
144.93%
EXPLANATION
The percent of change is:
[tex]\frac{\text{ final value - initial value}}{\text{ initial value}}\times100[/tex]In this problem the initial value is the acres from a year ago: 6.12 acres and the final value is the acres from this year: 14.99 acres. The percent of change is:
[tex]\frac{14.99-6.12}{6.12}\times100\approx144.93\text{ \%}[/tex]The percent of change is more than 100% because there's an increase that's more than the double.