What percentage of the AdventureWorks data is in Thai?
percentage = DIVIDE(Culture.Name = 'Thai', count(ALL Culture.Name))*100%
SELECT CAST(SUM(CASE WHEN T1.Name = 'Thai' THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(T1.CultureID) FROM Culture AS T1 INNER JOIN ProductModelProductDescriptionCulture AS T2 ON T1.CultureID = T2.CultureID