From what I can gather, the average suvivability of covid is commonly known as 99.7% of all age groups. Can you break it down for me on how they are calculating 99.7% from the official numbers of the cdc?

Thanks.

Edit: Is this correct, deaths/cases x 100?

From cdc, currently, 37,259,886 cases 623,244 deaths.

But I am getting 1.6%, that's 98.33% (maybe 99.7% was calc from previous numbers if someone knows?).

Sidenote, we all know the actual death is 5.5% of the covid deaths they report.

From what I can gather, the average suvivability of covid is commonly known as 99.7% of all age groups. Can you break it down for me on how they are calculating 99.7% from the official numbers of the cdc?

Thanks.