What percentage of all tied games did the Sassuolo team play in?
tied games refer FTR = 'D'; DIVIDE(COUNT(Div where FTR = 'D', HomeTeam = 'Sassuolo' or AwayTeam = 'Sassuolo'), COUNT(Div where HomeTeam = 'Sassuolo' or AwayTeam = 'Sassuolo')) as percentage;
SELECT CAST(SUM(CASE WHEN HomeTeam = 'Sassuolo' OR AwayTeam = 'Sassuolo' THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(FTR) FROM matchs WHERE FTR = 'D'