% (thing) by ariels - Everything2.com

The percent sign (a corruption of how you'd write parts-per-100).
In BBC BASIC, a variable name suffix denoting an integer. So "LET I%=3.14159 : PRINT I%" would print "3". The one-letter integer variables @%,A%,...,Z% were even more special: they were stored in fixed places in page 4 (&400..&4FF), so access to them didn't go through a symbol table, and was fast.
In C (and awk, C++, Perl, Python, TCL, PHP, and every other language out there after C), the "modulo" operation. Be careful with negative arguments, though!
In csh and derivatives (and copycats!) a prefix to denote a job.
In Perl, a variable prefix denoting a hash.
In Nethack, FOOD.

@	10% life, 90% drama	pattern rule	1642
decimal division	Modulus	PostScript	NetHack
Unicode European Alphabets	complex number division	The Art of Looking Sideways	Given that a and b are integers, a^2 = b^3, and a is even, prove that a must be divisible by 4
HTML Special Characters	BBC BASIC	HTML symbol reference	division ring
&	long division	Percent	integer
hexadecimal	hash	SQL