Database: books
Question: Among all orders updated in 2022, identify the percentage that has been returned.
SQL: SELECT CAST(SUM(CASE WHEN T1.status_value = 'Returned' THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(*) FROM order_status AS T1 INNER JOIN order_history AS T2 ON T1.status_id = T2.status_id WHERE STRFTIME('%Y', T2.status_date) = '2022'