Thank you for posting the correct way this should read.
20X lower is an oxymoron IMO.
I guess it's not PC to say 1/20 or 5% of the amount.
I cringe, whenever I see that dumbed-down formulation. Some “genius” editor once glommed onto the fact that most of his readers couldn’t handle fractions, or percentages. Solution: dumb down the math, to the point where it’s an oxymoron.
Another correct way of describing the turnout, would be “95% less than ...”. Saying “20X lower”, is the same as saying “2000% lower”. As 100% lower attendance is the same as saying “nobody showed up”, saying 20 times (or 2000%) less is complete nonsense.
Given that most journalists are innumerate, this asinine formulation won’t be going away soon. It’s a shame to see it in Breitbart.