As owner, you can transfer you page to a new owner by following the below steps
Switch to your page then click on “manage” -> Manage users tab
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At manage user tab, click on “Transfer page” to open popup to transfer page to new owner
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Type the name of the user that you want to transfer to page to and click on “Transfer” button
System will ask you to enter password to validate your identiy
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If password is valid. Page will be transferred to new owner. The new owner will get a notification and then can start manage the page.