The correct answer is 360 degrees, 100 percent, and the chart's value depends on what data is put into the chart.
However, typically in most contexts, a pie chart represents either 360 degrees or 100 percent, as these are the two primary ways to describe a whole pie.
If the intention is to specify a single answer related to a conventional pie chart, the best choice would be 100 percent. If you're considering the degrees in terms of the angle of the pie chart, then 360 degrees is also correct.
But since your question implies selecting one option, the most standard choice would be 100 percent.