def product_repurchase_rate(number_of_repeat_purchasers, total_purchasers):
    """Returns the percentage of customers who purchased a product for the second time or more.

    Args:
        number_of_repeat_purchasers (int): Total number of unique repeat purchasers during a period.
        total_purchasers (int): Total number of unique purchasers during a period.

    Returns:
        Percentage of customers who purchased product for the second time or more during a period.
    """

    return (number_of_repeat_purchasers / total_purchasers) * 100