That you quoted the percentage of total population rather than the percentage of total workers suggests that you're trying to spin-doctor. The same link calls $9.50 "well over" the minimum wage of $7.25... conveniently ignoring that $9.50/hour is still a shit wage. That link clings to the literal minimum wage like a limpet - notice how it never tells us the numbers of people barely above minimum wage? Earn $7.50/hour? Well you're too well off to be part of those statistics...
The author then has the gall to accuse others of using selective statistics to make their argument, and even throws out the 'class warfare' canard.