Write SQL query to solve given problem: From the 'Injured' statuses of the subject, what is the ratio of weapons used are knife against handgun?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT CAST(SUM(T1.subject_weapon = 'Knife') AS REAL) * 100 / SUM(T1.subject_weapon = 'Handgun') FROM incidents AS T1 INNER JOIN subjects AS T2 ON T1.case_number = T2.case_number WHERE T1.subject_statuses = 'Injured'