What is the percentage of act number 5 in Titus Andronicus?
act number 5 refers to Act = 5; Titus Andronicus refers to Title = 'Titus Andronicus'; percentage = divide(sum(Act = 5), count(Act)) as percentage
SELECT CAST(SUM(IIF(T2.act = 5, 1, 0)) AS REAL) * 100 / COUNT(T2.act) FROM works AS T1 INNER JOIN chapters AS T2 ON T1.id = T2.work_id WHERE T1.Title = 'Titus Andronicus'
database name:db_id shakespeare
chapters table chapters Cols: id dtype integer, Act dtype integer, Scene dtype integer, Description dtype text, work id dtype integer, 
characters table characters Cols: id dtype integer, char name dtype text, abbreviation dtype text, Description dtype text, 
paragraphs table paragraphs Cols: id dtype integer, paragraph number dtype integer, Plain Text dtype text, character id dtype integer, chapter id dtype integer, 
works table works Cols: id dtype integer, Title dtype text, Long Title dtype text, character id dtype integer, genre type dtype text, 
