### Database Schema:
CREATE TABLE matchs (
	Div	TEXT	NULL,
	Date	DATE	NULL,
	HomeTeam	TEXT	NULL,
	AwayTeam	TEXT	NULL,
	FTHG	INTEGER	NULL,
	FTAG	INTEGER	NULL,
	FTR	TEXT	NULL,
	season	INTEGER	NULL,
	foreign key (Div) references divisions (division)
);

CREATE TABLE divisions (
	division	TEXT	NOT NULL	PRIMARY KEY,
	name	TEXT	NULL,
	country	TEXT	NULL
);

### User's Query:
What percentage of all tied games did the Sassuolo team play in?

### Extra Knowledge:
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'