SQL With New Column And Arithmetic

select employee_id,
last_name,
salary,
(salary + (salary * .155)) AS "NEW SALARY"
from store13.employees;

In the above example, I was able to get this to work. Now I need to add another column in the query (not the table) like this:

select employee_id,
last_name,
salary,
(salary + (salary * .155)) AS "NEW SALARY",
("NEW SALARY" - SALARY) AS "INCREASE".
from store13.employees;

This errors out. It seems to have a problem using the newly referenced column "NEW SALARY" to perform another math statement.