(have you) changed your mind
Have you changed your original opinion, choice, or plan? Oh, I thought you were going to have oatmeal for breakfast. Changed your mind?
(Have you) changed your mind?
and You changed your mind?Have you decided to alter your decision? Sally: As of last week, they said you are leaving. Changed your mind? Bill: No. I'm leaving for sure. Tom: Well, have you changed your mind? Sally: Absolutely not!