Showing a negative as a positive and a positive as a negative number

Thanks for help on this issue.

I need to populate a cell with a total from another cell.

If that total from another cell is a negative number I need it to be displayed as a positive number and vice versa, if it is a positive number I need it to be displayed as a negative number.

Example

A1 is ($300)

I need A2 to diplay $300

Thanks for any help with this.

Thank you pjoaquin