A 1/2 cup serving of Quaker Old Fashioned Oatmeal has 27g of carbs, 5g of protein and 3g of fat. My calculations say that it's 77% carbs, 14% protein and 9% fat. That's right off of my oatmeal container here at work. The fat breakdown is .5g saturated, 1g polyunsaturated and 1g monounsatured.
I add 1 scoop of protein powder at 20g protein, 3g carb and 1g fat to make it more balanced.