What portion of genes would you share with a woman who is yours mothers biological sister?

Personally, I would say that I share social traits with my aunts and strange attitudes sometimes. For example: In nature I'm very extroverted and don't think about future consequences. That wouldn't be a good thing if I actually were to confront the real world without some sort of guidance or chaperone. Also, I like art such as painting and drawing. It's a passion my mother does not share with me. I know of aunts who have my same passion and have a wild-extroverted nature.