There really isn't a right or wrong amount of protein. As long as it congains high
quality protein (animal source), the amount shouldn't be a big worry. Everybody has a their own preference as to how much protein they're most confortable feeding. I personally prefer the high-protein, grain-free diets, bc after all dogs are carnivores.
So IMO, the more the marrier.
But really there's nothing wrong with either lower or higher protein diet.
Hope that helps.
Choosing a food can be very difficult and confusing.