For all the games ended up with 1-1, what percentage of them are from Liga NOS division?
1-1 is a score where FTHG = '1' and FTAG = '1'; Liga NOS is the name of division; DIVIDE(COUNT(Div where FTHG = '1', FTAG = '1', name = 'Liga NOS'), COUNT(Div where FTHG = '1' and FTAG = '1')) as percentage;
SELECT CAST(COUNT(CASE WHEN T2.name = 'Liga NOS' THEN T1.Div ELSE NULL END) AS REAL) * 100 / COUNT(T1.Div) FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T1.FTHG = 1 AND FTAG = 1
database name:db_id european_football_1
divisions table divisions Cols: division dtype text, name dtype text, country dtype text, 
matchs table matchs Cols: Division dtype text, Date dtype date, HomeTeam dtype text, AwayTeam dtype text, Final-time Home-team Goals dtype integer, Final-time Away-team Goals dtype integer, Final-time Results dtype text, season dtype integer, 
