Looking for an SQL statement that pertains the to the table below that answers this question: List each teacherno, techerName, Salary and the extent to which this teachers salary differs from the avarage salary of all teachers. (make the difference positive if the teachers salary is higher than the average and negative if it is lower than the average..

I am using ORACLE.

Teachers
TeachNo	TeachName	CourseNo	DeptNo	StartDate	Salary
101	Kluger	101	10	20-Oct-2016	65000
102	Confucious	102	11	11-Jan-2017	73000
103	Crazer	101	10	15-Aug-2000	71000
104	Nutting	103	10	16-Aug-2007	52000
105	Brawler	104	11	20-Aug-2005	91000
106	Lazerk	107	12	20-Sep-2002	64000
107	Alienous	105	13	15-Aug-2001	79000
108	Asylant	106	13	15-Aug-2007	61000
109	fanatikal	102	11	20-Sep-2000	62000
110	Babyest	101	10	20-Aug-2003	67000