A random sample of students was surveyed and asked to list their grade level and whether or not they have a pet. Results are shown in the table below.



\begin{table}

\captionsetup{labelformat=empty}

\caption{Pets Survey}


PetsNo Pets

6th grade
2125

7th grade
2616

8th grade
1615




\end{table}



What percent of the 8th graders don't have a pet? Round your answer to the nearest whole number percent.