Difference From Department Average

Return each employee's name and how far their salary is from the department average (salary minus average). Order by name.

Table schema

Employees(id INT PRIMARY KEY, name VARCHAR(50), department_id INT, salary INT)

Sample data

id | name | department_id | salary
1 | A | 1 | 100
2 | B | 1 | 200
3 | C | 1 | 300