Entering Negative Numbers
You can enter negative numbers in Microsoft Dynamics NAV in two ways. The number -20.5 can be entered as:
-20.5
20.5-
In both cases, the amount will be recorded in Microsoft Dynamics NAV as -20.5.
If the last character of the expression is a + or a -, the entire expression will be recorded with that sign. An example, 10-20+ will result in 10 and not -10.