def format_percent(percentage, pos):
    """
    Formats percentages for the 'x' axis of a plot.

    :param percentage: The fraction between 0.0 and 1.0
    :type percentage: float
    :param pos: The position argument
    :type pos: int
    :return: A formatted percentage string
    :rtype: str
    """
    # pylint: disable=unused-argument
    return '{:.0f}%'.format(percentage * 100.)