How can someone change their tax residence from Greece to another country?

In order for someone to change his tax residence from Greece to another country, he must contact the Tax Authority to which he belongs and demand through all the application materials that they accept any evidence that proves that he has transferred his tax residence to the other country (certificate tax residence from the foreign country, copy of passport or identity card, copy of the lease agreement or proof of property ownership in the foreign country, employment contract, bank statements, any other documents that prove the intention to become the permanent or main residence or the center of life interests in the foreign country).