Help Needed - How would I replicate statistical tests in this chart? Chi-square test?

#1
Wondering how I would assess significant differences between frequency distributions, as done here in green and red circles?

Would it be a type of chi-square test?

If so, what are the post hoc tests to apply to figure out where exactly the statistical differences lie?

To add to the fun, I'm limited to excel software. Thanks for all help!

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