def percentage(now, maximum):
    """
    Given the present (now) value and the maximum value
    determine the percentage (now/maximum * 100) we have got to and return as a string
    Since now tends to be from 0 to maximum-1, we take 1 off of maximum
    :param now: The present value through a list
    :param maximum: The number of items in the list
    :return: a string represnting percentage
    """
    percentage_value = (now / (maximum - 1)) * 100
    out = "{:6.2f}%".format(percentage_value)
    return out