How to open a Cojilio Report in Excel (instead of Numbers) on a MacBook

1. On your Mac, click the Finder icon in the Dock to open a Finder window
2. Select the file, then choose File > Get Info
3. You can also Control-click the file, then choose Get Info
4. In the Info window, click the disclosure triangle next to “Open with"
5. Click the pop-up menu, then choose the app
6. To open all files of this type with this app, click Change All

Check out this Apple Help Guide: Permanently change the app used to open all files of a particular type