How to change speedometer and odometer from Km to miles

What is your question?

I recently took my 2016 Mazda CX-9 to Walmart for an oil change. After leaving the shop, I noticed my speedometer and odometer are reading in Km instead of miles. How can I change this back to miles/hour?

What makes this problem better or worse?

N/A

How long has your 2016 Mazda CX-9 had this problem?

1 week