Sub compareDiff()
Application.ScreenUpdating = False
Application.EnableEvents = False
Dim WS1 As Worksheet, WS2 As Worksheet, WS3 As Worksheet, LR&, i&, j&
Set WS1 = Worksheets("Sheet1") 'Change name as required
Set WS2 = Worksheets("Sheet2")
Set WS3 = Worksheets("Sheet3")
LR = WS1.Range("A" & Rows.Count).End(xlUp).Row
For i = 1 To LR
For j = 1 To 8
'Difference between worksheet 2 and worksheet 1 (ws2 - ws1)
WS3.Cells(i, j).Value = WS2.Cells(i, j).Value - WS1.Cells(i, j).Value
Next j
Next i
Application.ScreenUpdating = True
Application.EnableEvents = True
End Sub