def product_turnover(units_sold_in_period, average_items_stocked_in_period):
    """Return the product turnover (or sell through rate) for a product based on units sold versus items stocked.

    Args:
        units_sold_in_period (int): Number of units of product X sold in the period.
        average_items_stocked_in_period (int): Average stock holding for product X in the period.

    Returns:
        product_turnover (float): Percentage of average stock holding sold during the period.
    """

    return (units_sold_in_period / average_items_stocked_in_period) * 100