How do I find win rates of certain champions?

Now I know what you're thinking, "Bro, its in the fucking client god damn" but no, I dont mean just ranked, I mean a win rate on a champion for every single game or just something that includes normals. By my name, you can tell I'm a Wukong main and I'm really interested to see my winrate on him.

EDIT: Sorry if I worded it wrong, I mean ALL of MY games on a champion