Yes raw is much lower in protein than kibble; especially the no grain stuff; so your question is what?  Why would you want to take them off raw.  I would probably only give them l cup of kibble a day and go with raw mostly.  You CAN find prepared diets like Bravo that is higher in protein  but if it says balanced it should be good.  Maybe supplement them with some chicken wings for extra or necks for the cartlidge; or even chicken feet.  Add the chicken feet for a snack or?  A chicken quarter would be good once in a while, I like them to rip and tear, it strengthens the jaws.  Best of luck Nan

Seems to me that this "Bravo" is somewhat watered down. With 78% moisture that leaves not that much in there in the first place. Here is Bravo's Chicken analysis:  
http://www.bravorawdiet.com/product/balance/balance_prem_chckn.html
With only 4% fat this is a very lean diet for a puppy. Too lean in my eyes. Puppies need more fat and proteins. Now don't get that confused with the kibble proteins. Kibble proteins are processed much differently than raw and too much protein from kibble has been known to cause rapid growth in puppies. In turn this rapid growth can and does cause Pano. Pano can be compared to teenage human growing pains. The long bones become enflamed and sore because of the rapid growth, causing limping. Raw fed puppies do not usually have a problem with Pano even though a raw fed diet is mostly protein and fat. It seems these processed raw diets contain far less protein and fats than feeding raw meat, bones and organs. Think about it.... handing a dog a chicken leg quarter is how much protein? How much fat? While even straight raw meat has a very high moisture content it is very high in protein and fat. Which is what dogs need.( Again, don't get this confused with kibble) 


 Here is a comparason with Natures Variety Chicken:
http://www.naturesvariety.com/InstinctRaw/dog/chicken 
It is somewhat better than Bravo, but not near as nutrient rich as feeding raw yourself.
Debby