def storage_format(number: int) -> str:
    """Format a number representing a bytes of storage according to our convention
    Uses convention that 1 GB = 1000^3 bytes

    Parameters
    ----------
    number : int
        A number of bytes to format

    Returns
    -------
    str
        The formatted storage string
    """
    GBs = float(number) / float(1000 ** 3)
    if GBs > 100:
        GBs = round(GBs)
        GBs_str = f"{GBs} GB"
    else:
        GBs_str = f"{GBs:,.1f} GB"
    return GBs_str