for percentage of species at very high risk of extinction are 9% at 1.5°C, 10% at 2 °C, 12% at 3°C, 13% at 4°C and 15% at 5°C , with the likely range of estimates having a maximum of 14% at 1.5°C and rising to a maximum of 48% at 5°C. Extinction risks are higher for species in biodiversity hotspots , reaching 24% of species at very high extinction risk above 1.5°C, with yet higher proportions for endemic species of 84% in mountains  and 100 % on islands . Thousands of individual populations are projected to be locally lost, which will reduce species diversity in some areas where there are no species moving in to replace them, for example, in tropical systems . Novel species interactions at the cold edge of species' distribution may also lead to extirpations and extinctions of newly encountered species . Palaeo records indicate that at extreme warming levels , mass extinctions of species occur . Among the thousands of species at risk, many are species of ecological, cultural and economic importance. 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report