There is good reason to believe it is more like .9%.To be honest, the idea that only 80k people in China came down with this is totally bogus. It first exploded in Wuhan, a city of almost 12 million people. It's bigger than Chicago. Have you seen pictures of Wuhan? It's nothing but tall buildings...people literally on top of each other. When people talk about the "mortality rate" being around a high 2-3% rate, how many of the residents of Wuhan never actually sought out medical treatment for Corona? How many just stayed home? Those people were never counted in the "cases" statistic. The numbers of cases should be 5-10 times higher just based on the size of the city. That would put the mortality rate down way below 0.5%.
On a cruise ship the mortality was 7/712 (0.98%) for passengers who tested positive and all passengers were tested.
In South Korea where everyone potentially exposed is tested they are at 91/8565 (1.06%) which is probably a tad higher than the actual rate taking into account that they probably missed some people in testing.