-- Database schema
| incidents : case_number [ TEXT ] primary_key , date [ DATE ] , location [ TEXT ] , subject_statuses [ TEXT ] , subject_weapon [ TEXT ] , subjects [ TEXT ] , subject_count [ INTEGER ] , officers [ TEXT ] | officers : case_number [ TEXT ] officers.case_number = incidents.case_number , race [ TEXT ] , gender [ TEXT ] , last_name [ TEXT ] , first_name [ TEXT ] , full_name [ TEXT ] | subjects : case_number [ TEXT ] subjects.case_number = incidents.case_number , race [ TEXT ] , gender [ TEXT ] , last_name [ TEXT ] , first_name [ TEXT ] , full_name [ TEXT ] |
-- -- From the 'Injured' statuses of the subject, what is the ratio of weapons used are knife against handgun?

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';