Oh I wasn't talking about humans. I should probably have pointed that out. There's some scenarios like catastrophic crop failure and so on that might lead to that, but frankly I doubt it.
I was referring more to everything else. Corals, certain insects, polar bears, salamanders and so on. With some quick googling it appears that the "Bramble Cay Melomys" is the first species so far to be declared extinct because of climate change, but the number that seems to be thrown around is that an average of 18% of terrestrial life will be critically endangered by 2100 in a scenario with 2 degrees warming. I can't be bothered with figuring out what degree of academic consensus there is around that number, but I think it's reasonable to assume that there's at least some kind of consensus about "more than 1%".