def get_seats_percent(election_data):
    """
    This function takes a lists of lists as and argument, with each list representing a party's election results,
    and returns a tuple with the percentage of Bundestag seats won by various political affiliations.

    Parameters:
        election_data (list): A list of lists, each representing a party's election results

    Returns:
        A tuple with percentage of Bundestag seats won by various political affiliations
    """

    left_seats = 0
    right_seats = 0
    extreme_seats = 0
    center_seats = 0
    total_bundestag_seats = 0

    for party in election_data[1:]:
        total_bundestag_seats += int(party[1])
        if 'far' in party[2]:
            extreme_seats += party[1]
        else:
            center_seats += party[1]
        if 'left' in party[2]:
            left_seats += party[1]
        else:
            right_seats += party[1]

    left_percent = round((left_seats / total_bundestag_seats * 100), 2)
    right_percent = round((right_seats / total_bundestag_seats * 100), 2)
    extreme_percent = round((extreme_seats / total_bundestag_seats * 100), 2)
    center_percent = round((center_seats / total_bundestag_seats * 100), 2)

    return left_percent, right_percent, extreme_percent, center_percent