How do you know which type of hypothesis test to use

I have an inferential statistics homework question that asks me to determine which hypothesis test to use.

General US population (mutually exclusive):
72% omnivores
20% vegetarians
8% vegan

Sample people in my city (N=300):
195 omnivores
68 vegetarians
37 vegans

Question: Is there a difference between the numbers from the general population and my area?

Which hypothesis test would I use to determine if there is a difference between these 2 groups?

Pearson's Chi Square