Yep; rounded from 16%==Evil ~=1/6th-pop -vs-5/6. Your phrase, "x%-of 1/5" is an odd formulation
for a Mathematician, innit? :-þ
One does not "take a percentage-of-a-ratio", as seems to defy clarity (?)
How I dropped-in 1/5 not 1/6 ..must have been a Cosmic ray into one of my flip-flops, a veritable mistreak!
I shall stick with fractions when dealing with factions ..for at least a week.
Likely never shall I attempt to wade through Bertie's Proof that [2+2=4]
... too slothful to become a real-mathematician, whilst failing arithmetic here :-/
('Course the exponential function is the actual Star of the foreseeable, I wot).