Calculation Not Displaying Proper Answer
In addition to correcting the parentheses, if you want your output to be .055172 then you should cast (val7*.22) as an integer in your equation.

http://rextester.com/SQP94408

Declare @Hold Table (val1 float,val2 float,val3 float,val4 float,val5 float,val6 float,val7 float)
Insert Into @Hold values (145, 10, 20, 30, 40, 50, 60)
Select
 ( 
   (val1)
  -(val2+val3+val4+val5+val6)
  + (cast((val7*.22) as int)) -- this results in 13
  )  /val1
FROM @Hold 
/* results in 0.0551724137931034 */

Select
 ( 
   (val1)
  -(val2+val3+val4+val5+val6)
  +(val7*.22)  -- this results in 13.20 not 13
  )  /val1
FROM @Hold 

/* results in 0.056551724137931 */