What percentage of Catalan-language Wikipedia pages have more than 10,000 words?
Catalan-language refers to lang = 'ca'; more than 10,000 words refer to words > 10000; DIVIDE(COUNT(pages WHERE words > 10000 and lang = 'ca'), COUNT(pages WHERE lang = 'ca')) as percentage;
SELECT CAST(COUNT(CASE WHEN T2.words > 10000 THEN 1 ELSE NULL END) AS REAL) * 100 / COUNT(T2.page) FROM langs AS T1 INNER JOIN pages AS T2 ON T1.lid = T2.lid WHERE T1.lang = 'ca'