... and, as yet, we know nothing about who he was or what his family want.
Like some others, I am not a great enthusiast for commandeering the emotions of a very personal event like a death and turning them into something public. Unless there is a good reason.
That's a very odd statistic, since it is always the case that the need for CPR will never be understood at the moment of need by the person who will benefit from it.
I'm no expert, but I do have a friend who collapsed with a cardiac arrest in a London street last year and recovered - probably...
I think that is an understatement of the success rate. However, it is certainly the case that the earlier that CPR is attempted, the more likely that it will be successful.