Way too high. My best hatches are when I have my humidity during incubation around 30% to 40%. on day 18 when I take the eggs out of the incubator and put them in the hatcher, I get the humidity up to around 75%. They could drown because with that high of humidity during incubation because water can build up in the air cell and when the chicks pip the air cell they can drown. Leave the chick alone that is still absorbing the yolk. It may still absorb some of it. Originally during incubation the eggs need to loose moisture and if the humidity is too high during incubation and the eggs can't loose the moisture they need to can result in issues with the chicks.