You haven't answered the question as to what happens to the other 27% per cent.
Whist some die and some get over it quickly for the rest it's a debilitating and uncomfortable disease...but they recover
I gave a link to Rob, which I find to be a partial explanation.
https://www.worldometers.info/coronavirus/#countriesSome in the serious / critical make it, others don't. Those who don't make it pass over to the "death" category. In the absence of sufficient beds, in some countries they're having to make difficult decisions: if you have a finite quantity of ICU beds / respirators / specially trained medical staff) to concentrate on those most likely to survive.
In some countries, I've noticed that the "recovered / discharged" category can be low. AFAIK, that doesn't necessarily mean a higher fatality rate - it could be that they didn't require respiratory assistance and were sent home to self-isolate until they got better... or fell of the radar. In theory, I would think that to be deemed officially "recovered" would require a further test... but if there aren't enough tests / lab capacity, that may be secondary for the moment.