Write SQL query to solve given problem: How many times is married non sales employees against single non-sales employees?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT CAST(SUM(CASE WHEN T1.MaritalStatus = 'M' THEN 1 ELSE 0 END) AS REAL) * 100 / SUM(CASE WHEN T1.MaritalStatus = 'S' THEN 1 ELSE 0 END) FROM Employee AS T1 INNER JOIN Person AS T2 ON T1.BusinessEntityID = T2.BusinessEntityID WHERE T2.PersonType = 'EM'