>>7967943 lb
your methodology is incorrect anon.
deaths divided by total population = percentage of mortality.
171/8235=0.0207650273 x 100 = ~2.07%
if the mortality rate was 55% then
4529 deaths/ 8235 cases = 0.5499696418 x 100 = 54.9%
you are calculating the percentage of people who have died according to patients who no longer require treatment. not the percentage of people who have died in the entire population.
https://www.reference.com/world-view/calculate-mortality-rate-7b638167a2fd76eb