Unfortunately displaying negative currency values with a hyphen/dash instead of within parenthesis is not an option in Visual Analytics version 8.5.2. Currency will always use the parenthesis to show negative values.
You *might* be able to achieve this with a user-defined format, but this is not something I have explored:
https://go.documentation.sas.com/doc/en/calcdc/3.5/caldatamgmtcas/n0jtz261h5qtg7n1j6ql02gd65lo.htm
Or using a non-currency format will also show the negative symbol (hyphen/dash) if you can get away with that, but I realize that is not ideal either.
This has changed for Viya 4 if moving to that release in the future is an option. In that version of Visual Analytics (version 2023.02 in this example), negative values are used:
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