Change default Number Format - From US to Indian Standards

The default number format is set to US Standards - which is X,XXX.00. We would want change this to XX,XX,XXX.00 which is Indian format. What is the best way to do this?

Eg: Instead of showing 123,456.00 we need to show 1,23,456.00.

Unfortunately the requested number format is not supported.
The only solution is to create your own custom columns type with the required formatting.
Here you can find a tutorial: … olumntypes