### Database Schema:
CREATE TABLE location (
	locationID	INTEGER	NULL	PRIMARY KEY,
	locationcity	TEXT	NULL,
	address	TEXT	NULL,
	state	TEXT	NULL,
	zipcode	INTEGER	NULL,
	officephone	TEXT	NULL
);

CREATE TABLE employee (
	ssn	TEXT	NULL	PRIMARY KEY,
	lastname	TEXT	NULL,
	firstname	TEXT	NULL,
	hiredate	TEXT	NULL,
	salary	TEXT	NULL,
	gender	TEXT	NULL,
	performance	TEXT	NULL,
	positionID	INTEGER	NULL,
	locationID	INTEGER	NULL,
	foreign key (positionID) references position (positionID),
	foreign key (locationID) references location (locationID)
);

CREATE TABLE position (
	positionID	INTEGER	NULL	PRIMARY KEY,
	positiontitle	TEXT	NULL,
	educationrequired	TEXT	NULL,
	minsalary	TEXT	NULL,
	maxsalary	TEXT	NULL
);

### User's Query:
If Jose Rodriguez tried his best, how many percentage can his salary raise without changing his position?

### Extra Knowledge:
Jose Rodriguez is the full name of an employee; full name = firstname, lastname; calculation = DIVIDE(SUBTRACT(maxsalary, salary), salary) * 100
SELECT 100 * (CAST(REPLACE(SUBSTR(T2.maxsalary, 4), ',', '') AS REAL) - CAST(REPLACE(SUBSTR(T1.salary, 4), ',', '') AS REAL)) / CAST(REPLACE(SUBSTR(T1.salary, 4), ',', '') AS REAL) AS per FROM employee AS T1  INNER JOIN position AS T2  ON T1.positionID = T2.positionID WHERE T1.firstname = 'Jose' AND T1.lastname = 'Rodriguez'