Hmmm.

So, OP didn't qualify which population they were percenting, which is a fair cop. You're setting the sample as "the world", and for sure those isolated hunter-gatherer tribes in central America totally didn't hear about it!

However, "number of computers" isn't a good way to measure this. I guarantee that every traveler who was trying to fly over the past week heard about it, because when it took down the airport computers, it created a travel backlog they're still clearing out.

Further, a 2014 study showed that more Americans work at large firms than small ones, and these are the very institutions hit worst by CrowdStrike. When it hit my wife's company, it took IT until this week to restore everyone's computer. First they worked on critical infrastructure, then they worked to restore laptops that had been shut down; for several days, entire teams were unable to do anything. And you bet that even of you're a self-employed plumber, you'd have heard about it when your spouse had an unscheduled vacation for several days. My wife was lucky and hadn't restarted her computer, and was terrified to do so until she got the all-clear from corporate IT. This being Windows, that meant that every day her computer got slower and slower; I don't know what it is about Windows that requires a reboot every couple of days to keep it from turning into a Commodore 64. Anyway, that was about 100k people around the world, and their spouses. Oh, and since you chose to include "the world" population, their kids probably heard about it, too. We have to discount all the infants, though; that for sure brings the percentage down 🙄

I agree with OP: it would be interesting to know how many adults in developed countries were completely unaware of the event. Versus how many in developing countries, even. It wasn't a stupid question.