Example using the '%' (mod) operator to return percent.

percent.py

import numbers

class Percent(float):
    def __mod__(self, other):
        """Override the builtin % to give X * Y / 100.0 """
        return self / other * 100.0

if __name__ == '__main__':
    from pprint import pprint
    pprint(
        Percent(5) % 60
    )