Fractions and Percentages

Alright, this really irks me: When your quantity or label is clearly a fraction, don't bloody call the thing a "percentage". So many people make this mistake. There is a multiplicative factor of 100 that specifically makes these objects different, and this is taught explicitly from an early age. Grrr....

Update: As it turns out, the example that reminded me of this particular one of my pet peeves turned out to correctly be a percentage. Go figure. Anyway, I am obviously fallible. (This is a common mistake, though, and it's annoying.)