Among all the teams that made the playoffs in the 2007-2008 season, identify the percentage that played over 20 games.
playoffs refers to GAMETYPE = 'Playoffs'; percentage = MULTIPLY(DIVIDE(SUM(GP > 20), COUNT(ELITEID)), 100); played over 20 games refers to GP > 20; 2007-2008 season refers to SEASON = '2007-2008';
SELECT CAST(COUNT(CASE WHEN GP > 20 THEN TEAM ELSE NULL END) AS REAL) * 100 / COUNT(TEAM) FROM SeasonStatus WHERE SEASON = '2007-2008' AND GAMETYPE = 'Playoffs'