If less than 200 people like your Page, and you're an admin or editor, you can change the name of your Page:
Click Settings at the top of your Page
Click Page Info in the left column
Click Name and enter a new name
Click Save Changes
If 200 or more people like your Page, and you're an admin, you may be able to submit a request to change your Page's name:
Click Settings at the top of your Page
Click Page Info in the left column
Select Update Page Info
Click Name and click Request Change
Fill out the form and click Send
If 200 or more people like your Page, you can only change your Page's name once. If your request is approved, you won't be able to change your Page's name again. If you don't see the option to submit a request, it might mean:
You're not an admin
Another admin on your Page submitted a request in the past
This option isn't currently available in your location