Calculate the percentage of paragraphs in all chapters of "All's Well That Ends Well".
"All's Well That Ends Well" refers to Title = 'All's Well That Ends Well'; percentage = divide(sum(paragraphs.id) when Title = 'All's Well That Ends Well', count(paragraphs.id)) as percentage
SELECT CAST(SUM(IIF(T1.Title = 'All''s Well That Ends Well', 1, 0)) AS REAL) * 100 / COUNT(T3.id) FROM works AS T1 INNER JOIN chapters AS T2 ON T1.id = T2.work_id INNER JOIN paragraphs AS T3 ON T2.id = T3.chapter_id