Minus Symbol in Front of Numbers

Minus Symbol in Front of Numbers

I have a ZohoSheet for monthly child support where I just copy the previous month's data to create the new month's data. However, when I insert a row, and copy data from another row, and then change (e.g., change the $25 t0 $50), Zoho always puts a minus symbol in front of the number, so that it looks like this:

-$50.00

However, it doesn't seem to act as a negative and I cannot figure out how to get rid of it. The only thing that works is to copy a row without the negative symbol into the misbehaving row.

How can I avoid this behavior?