error in update in jpql

I'm trying to pass this query to update I do a subtraction with 2 different tables but the update gives me an error because I do not recognize the other table here I put the query to see if you can give me an idea how you should build the update in jpql.

SELECT 
    t1.Kilometrost - t2.kilometrost 
FROM 
    Historial t1 
JOIN 
    t1.equipo t2 
WHERE 
    t1.id='9452'