Very stupid question about a % symbol

[J]

OK, this is a very stupid question about a very simple topic, but
Google is failing me this morning...

I'm trying to print a string that looks like this:

Reported memory amounts are within 10% tolerance

and the print line looks (for now) like this:

print "Reported memory amounts are within %s%s tolerance" %
(self.mem_tolerance,'%')

Is there a better way to print a '%' in the string when also using formating?

That works, but I've been looking for a way that looks... less kludgey.

I've tried things like this:

print "blahblahblah %s \%" % variable

but the first %s forces every other % to be interpreted as additional
format markers.

So while what I'm doing works, I was hoping someone could either
confirm that that's the right way, or show me a better way.

Cheers

Jeff