Counting the number of rows which do not match

Counting the number of rows which do not match

I have two tables with exactly the same structure i.e. same columns. I
want to find out number of rows which exist in both tables but do not have
exactly the same matching values for all columns. E.g. Table has colums
Id, Name, Country. Id is the primary key. If Id=1 exists in both tables
then other values should also match. Currently, I am using this kind of
statement.
SELECT COUNT(*)
FROM ##Table1 t1 ,
##Table2 t2
WHERE t1.Id = t2.Id
AND ( t1.Name != t2.name
OR t1.Country != t2.Country
)
Table has too many columns hence this is becoming too unwieldly. Is there
a better way to do it?