[RESOLVED] Trimming the end of a string

[Ricci]

I need to trim the last 4 characters off a string that is not consistent in length.

Ex: PG 02466 - 0 needs to be PG 02466
03300 - 1 needs to be 03300
03 30 00 - 0 needs to be 03 03 00

The last 4 characters will always be ' - #'

Any ideas?