Is there a way to change a positive number to a negative number (the whole column of data) without using a new calculated field? I would like to do when I pull up the table view, and export the data.
No, the only way to modify the original values is with a calculated field.
If you're intending to do this regularly, consider adding the calculated field and simply hiding the original field. Be sure to setup a project export and save your project file too.
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