Tipping is a very personal thing. There is no obligation or required amount despite anything suggested or % written in a brochure, However, I always give a decent tip in appreciation of service provided and never forget the camp staff. 10% is a good baseline if it is a good experience, sometimes more when provided very good personal service and it was clear to me that the guide was focused on my needs and hunting goals, or when the camp staff clearly took pride in the service provided. Certainly tip the guide more for a pre-scouted 1x1 than the “one of many” or “semi-guided” hunt.
As folks have already pointed out, a lot depends on the hunt cost, is it 1x1, length and difficulty/complexity of the hunt, etc. Gave my biggest tip ever to my brown bear guide as he was resilient in the face of horrible hunting conditions, had a plan B and C when plan A didn’t work, knew every facet of how to do that hunt, was fun & easy to be with and a great guy in camp, and led me to taking a 9 footer on our last hunting day. Couldn’t have been happier with the experience and would gladly hunt with him again anytime. The best guides are those who truly enjoy what they do. Been lucky enough to know a few who quickly became friends.