Of the movies in which Reese Kilmer acted, what percentage are action movies?
'Reese Kilmer' is a full name of an actor; 'action' is the name of the category; calculation = DIVIDE(COUNT('action'), COUNT(category_id)) * 100
SELECT CAST(SUM(IIF(T4.name = 'Action', 1, 0)) AS REAL) * 100 / COUNT(T1.actor_id) FROM actor AS T1 INNER JOIN film_actor AS T2 ON T1.actor_id = T2.actor_id INNER JOIN film_category AS T3 ON T2.film_id = T3.film_id INNER JOIN category AS T4 ON T3.category_id = T4.category_id WHERE T1.first_name = 'Reese' AND T1.last_name = 'Kilmer'