[Y_Y]

Paradox of choice, there are too many good percent symbols:

    U+0025 % PERCENT SIGN
    U+FF05 ％ FULLWIDTH PERCENT SIGN
    U+FE6A ﹪ SMALL PERCENT SIGN
    U+066A ٪  ARABIC PERCENT SIGN

[eqvinox]

No there aren't. Each of these has usage context that is not appropriate here. This text is neither in full-width kana, subscripts, nor arabic.

[Y_Y]

Sorry, I only use 10pc of my brain.

https://en.wikipedia.org/wiki/Poe%27s_law

[Citizen_Lame]

Doubt it.

[tsukikage]

...only one of those is on the keyboard though.

[reaperducer]

...only one of those is on the keyboard though.

Speak for yourself. I have ﹪ bound to ⌘⌥⇧5!

[ZiiS]

The fact you could type that sentence doesn't mean the whole sentence "is on your keyboard"