What percentage of podcasts are "technology" podcasts? List all of them.
"technology" podcast refers to category = 'technology'; percentage = Divide (Count (podcast_id (category = 'technology')), Count (podcast_id)) * 100
SELECT CAST(SUM(CASE WHEN T1.category = 'technology' THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(T2.title) OR '%' "percentage" FROM categories AS T1 INNER JOIN podcasts AS T2 ON T2.podcast_id = T1.podcast_id