Did you see the CPA's post at <a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/replies/4973178">https://ttlc.intuit.com/replies/4973178</a> yet? It's from three years ago, but still 100% spot on true today.
Basically, you need to "FINISH" the rental section. Then (and only then) when you get to the "Your Home" section under the Deductions & Credits tab, you'll see the remaining percentage is already entered there. Note that allocation between the two is "based on" the percentage, but is rarely "equal to" that percentage. Particularly when the part being rented is a separate structure from the main home.
