For all the games which were published by Namco Bandai Games, what percentage of them were adventure games?
published by Namco Bandai Games refers to publisher_name = 'Namco Bandai Games'; adventure game refers to genre_name = 'Adventure'; percentage = divide(sum(game_id where genre_name = 'Adventure'), count(game_id)) * 100% where publisher_name = 'Namco Bandai Games'
SELECT CAST(COUNT(CASE WHEN T4.genre_name = 'Adventure' THEN T1.id ELSE NULL END) AS REAL) * 100 / COUNT(T1.id) FROM game AS T1 INNER JOIN game_publisher AS T2 ON T1.id = T2.game_id INNER JOIN publisher AS T3 ON T2.publisher_id = T3.id INNER JOIN genre AS T4 ON T1.genre_id = T4.id WHERE T3.publisher_name = 'Namco Bandai Games'