Question: How many percent of the toss-winners decided to bowl first on the pitch from 2010 to 2016?
SQL: SELECT CAST(SUM(CASE WHEN T2.Toss_Name = 'field' THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(T2.Toss_Id) FROM Match AS T1 INNER JOIN Toss_Decision AS T2 ON T2.Toss_Id = T1.Toss_Decide WHERE T1.Match_Date BETWEEN '2010-01-01' AND '2016-12-31'