Function to return percentages in Python

I created a function for giving me percentages from two integers. I want two decimal places in the result.

def percent(num1, num2):
    num1 = float(num1)
    num2 = float(num2)
    percentage = '{0:.2f}'.format((num1 / num2 * 100))
    return percentage

It works, but I doubt it's very pythonic (since I have no idea what I'm doing)

>> print percent(1234, 5678)
21.73

In Python 3.0 or later, you do not need to explicitly convert your numbers to float. This is because the / operator always does floating point division (the // operator does "floor" division).

For older versions of Python (2.2 or later), you can use:

from __future__ import division

which changes the old meaning of / to the above. This makes the operation of / more predictable as the result no longer depends on the type of the inputs.

StackExchange Code Review Q#69542, answer score: 6