It’s difficult to calculate an exact death rate. For one, there’s limited testing. Without being able to test the entire population, a whole range of biases can skew the rate dramatically. The large number of asymptomatic cases that never go reported may be an indication that the reported mortality rate is too high. On the other hand, it’s likely many deaths due to COVID-19 have gone unreported. See, for example, the spike in overall deaths in Lombardy in Q1 2020 compared to prior years and how it exceeded the official COVID-19 death tally for that region by something like 4x. Then there’s the question of what deaths to attribute to the disease. If a drug overdose patient died because they couldn’t get access to a ventilator, would you include that in your death rate? You couldn’t if you were tracking the mortality rate of the disease to the people it infected, yet there are significant such cases of deaths that would not have occurred had this pandemic never begun. Those numbers won’t be captured in a naive calculation either.

That being said, I’ve found a good summary of some statistics on this page, which you may find helpful.

https://www.worldometers.info/coronavirus/coronavirus-death-...