hurting people's intelligence by throwing around absolutely unsubstantiated and risible percentages is just a different form of being rude
People reading in good faith understand what 99% means (it, as well as 95% etc., are commonly used that way, to mean "overwhelming majority"). Besides, if I wanted to write the actual number, which I happen to have, I'd have written 92,768%.
In any case, you don't have to justify the rudeness, a simple "sorry" would have sufficed.
79.53% of statistics come from the nether region.
“99%” when used like this is essentially an expression in English, for “almost all” or “almost certain.” It is very hard to believe that they have the actual statistic or that it happens to be exactly 99%, so I wouldn’t worry about anybody getting mixed up.
Could you please stop posting unsubstantive comments and flamebait? You've unfortunately been doing it repeatedly. It's not what this site is for, and destroys what it is for.
If you wouldn't mind reviewing https://news.ycombinator.com/newsguidelines.html and taking the intended spirit of the site more to heart, we'd be grateful.
Seeing "plenty of people refilling their bottles at public fountains" says nothing compared to the vast majority that doesn't, and doesn't even carry bottles.
Also, regarding "please avoid writing random bullshit numbers", please avoid being rude.