Help with formating

I want to show an expression value in number format with two decimals. I’m using this expression to show discount value. 25.00% discount with CASH Pay:|[={TICKET TOTAL}-{TICKET TOTAL}*0.25]. I want final value to be like 3.50 not like 3.5. How do I do this?

Use this:

[=F(TN('{TICKET TOTAL}')-(TN('{TICKET TOTAL}')*0.25),'#0.00')]

More info on formatting can be found here: