Write SQL query to solve given problem: Calculate the percentage of paragraphs in all chapters of "All's Well That Ends Well".. Keep the solution inside sql tag ```sql [SQL-Query] ```
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