Question: What percentage of players have Legbreak skill?
SQL: SELECT CAST(SUM(CASE WHEN T2.Bowling_skill = ' Legbreak' THEN 1 ELSE 0 END) AS REAL) * 100 / TOTAL(T1.Player_Id) FROM Player AS T1 INNER JOIN Bowling_Style AS T2 ON T1.Bowling_skill = T2.Bowling_Id