There is a take 'n bake pizzeria near my apartment that I enjoy going to every once in a while. Every time I go, I get the same pizza pie, a large chicken and bacon stuffed pizza pie which costs US$17; however, on Tusesday's, the pizzeria has a deal that you can buy any large pizza pie for US$10. If I buy my favorite pizza pie on a Tuesday, how much money do I save and how much of a percent do I save?