invert values in a column
I use Quickbooks Self-employed(QBSE) to support my small consulting gig.
Use my Apple Card for Apple related expenses. Apple does not allow its credit card accounts to be imported to QBSE. You have to do it by importing the transactions via a .csv file.
The issue is I need to invert purchase transaction, which comes in as a '+' value, to '-' value; and to do the same in reverse for a payment.
Is there a way in Numbers to select a column, then invert a positive '+' to a negative '-' value representing a purchase, and vice versa for payments?
Right now I have to go through each transaction manually.
Thanks in Advance!
Alex