SELECT b.tag, CONCAT( ROUND( AVG( (CASE WHEN TIMESTAMPDIFF(SECOND,a.start_time,a.end_time) >= b.duration THEN 1 ELSE (TIMESTAMPDIFF(SECOND,a.start_time,a.end_time)/b.duration) END)*100) /* IF (TIMESTAMPDIFF(SECOND,a.start_time,a.end_time) >= b...