Rather than guess at which percentage representation is more intuitive to people, the blog post suggests something more concrete:

instead of: GitHub Actions: 98.31% uptime.

We say something like: GitHub Actions: 12 hours affected in the last 30 days (98.31% uptime).

I’ve been presenting numbers to people for a long time and I know they flip back and forth between “these percentages are abstract - what’s the actual total number?” and “how do I put these totals in perspective? What percentage is it?” The blog post suggests offering both, which is the right choice.