Perhaps you mean "90% of covid hospitalizations", which is different than "90% of hospitalizations". I've been checking the jhu pages for various US states, never seen covid hospitalization rates above 10-20% and covid ICU utilization rate above 30%.
Right now, using the Rt map from https://covidestim.org, looks like Indiana & Ohio are in the middle of a wave. Covid hospital bed utilization: IN 10%, OH 15%. Covid ICU utilization: IN 20%, OH 20%.