A huge part of this question would be, what’s the application? Is it aiming to gain muscle on an ongoing basis while not letting fat increase much if at all, or cutting? I had the impression you meant cutting but aren’t positive.
For an ongoing basis, on this one what I think should be taken as just another opinion, as I’ll admit in a second that I’m on the side of erring on the side of caution for amount of protein. There are going to be those who have specifically worked with seeing how well reductions work in the context of still seeking to gain muscle. I only ever look at protein reductions in the case of making calories and macronutrient ratios work in cutting.
On the ongoing basis, personally I wouldn’t find a reason to cut total grams of protein on account of also using a very high quality protein, but it could be done.
For dieting, I would approach it as first looking at the carb amount that personally you do best on, then having (considering your size) at least 90 g of fat or so, and I would have at least 200 g protein or at least 30% of calories which likely would work out about the same. Any shortage in calories after this could be made up with either more protein or more fat; if there was room for more calories I’d be more interest in picking up percentage calories from fat towards 40% but past that would be more interested in increasing protein, again only if needed to meet calorie target.