What are options to monitor changes in an Excel table?
Possible solution I can think of is to have a clone copy of the table, say in a hidden worksheet and a formula which compares both sheets.
Is there any other way?
I totally agree with @Michał Turczyn. For security reasons is better to keep records about the changes. You could use:
Option Explicit
Dim OldValue As String
Private Sub Worksheet_Change(ByVal Target As Range)
MsgBox "The old value was " & OldValue & "." & vbNewLine & _
"The new value is " & Target.Value & "." & vbNewLine & _
"Date of change " & Now & "." & vbNewLine & _
"Change by " & Environ$("computername") & "."
End Sub
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
OldValue = Target.Value
End Sub