Database: toxicology
Question: Calculate the percentage of carcinogenic molecules with triple bonded Hidrogen atoms.
SQL: SELECT CAST(SUM(CASE WHEN T1.label = '+' THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(DISTINCT T1.molecule_id) FROM molecule AS T1 INNER JOIN atom AS T2 ON T1.molecule_id = T2.molecule_id INNER JOIN bond AS T3 ON T1.molecule_id = T3.molecule_id WHERE T3.bond_type = '#' AND T2.element = 'h'