I think "You never change." is the most usual and basic. But "You change never." is also well used in spoken English. "Never do you change." is almost never seen on books and heard in conversations. I just learned it from an English grammar so-called "inversion with negative adverb" like "Neither does she.", "Nor do I.". More examples are
I can be blamed for the accident in no way. -> In no way can I be blamed for the accident.
One seldom sees acts of charity. -> Seldom does one see acts of charity.
Largely when is the third form used? Is it just a usage of dead language?