There's an answer in open source China, http://www.oschina.net/question/2307266_237220.
Here are my steps to follow
First find the app to change your developer account in itunes Connect and click on the Transfer app
Points in after a few notes, probably looked at, seemingly nothing does not fit, the hint about three hours can be transferred successfully, because our app does not charge, and does not use IAD, there is about two business days
No problem, click Continue, need to fill out some of the recipient team's Apple ID, and team ID
Where the Apple ID is the login to the developer account and the team ID is not known, it can be found in the Your account panel of itunes Connect, for example
When you find it, fill it in, then click Continue and the contract terms
After clicking Agree, the transfer is completed and the page after completion is
Note that this app is being transferred, just wait three hours to
Change App Developer Account