https://help.tallysolutions.com/docs/te9rel64/Maintaining_Company_Data/F12_Config/Numeric_Symbols.htm

Changing Numeric Symbols Style

You can set the required number styles in Tally.ERP 9. The default styles and symbols are specified. However, you have the option of changing them in the respective fields according to your preference.

For example, change negative sign from (-) to (+).

To view the configuration of Numeric Symbols screen

1. Go to Gateway of Tally > F12: Configure > Numeric Symbols . The Configuration of Numeric Symbols screen appears as shown below:

2. Enable required options.

3. Press Ctrl+A to accept.

Note: If you change any configuration of number styles, you need to restart the application for those changes to reflect.