Change decimals from commas to dots in Excel
For some reason, my version of Excel on my MacBook Air has changed all of the decimals in my numbers to commas - ie it has changed my formatting from North American to European. I can work with that, but I'd much rather use the North American.
All of the answers to how to do this that I can find on the Web and on this Forum tell me to go to headings on my Excel file that do not exist. For example, on this Forum I was told to go to Advanced under File. There is no Advanced on my Excel. Is there a simple way to switch to North American style?
MacBook Air 11″, macOS 10.12