Answer
Mode.
Work Step by Step
The mode is $77\%$, because more than half of the data values are $77\%$, thus this will definitely be the data value appearing the most times.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.