Write SQL query to solve given problem: What is the difference between the events of device number -9222956879900150000 that can be located and those that are unable to be located?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT SUM(IIF(latitude != 0 AND longitude != 0, 1, 0)) - SUM(IIF(latitude = 0 AND longitude = 0, 1, 0)) AS diff FROM events WHERE device_id = '-922956879900150000'