How to place a comma from an existing card formatted to text

[delithyotho]

Thanks to @amitchandak for fixing my measure below, it works perfectly. nNow, the next task is I would like to have a comma separator whenver it says for example $1000.0M, and convert it to $1,000.0M. 

Here's the measure:

Card graph =
Var Total1 = CALCULATE(SUM('MasterData'[Sum1])*1000000)
Var Total2 = CALCULATE(SUM('MasterData'[Sum2])*1000000)
Var decimal = "0.0"
RETURN
SWITCH ( TRUE() ,
Total2 >= 1000000000 , CONCATENATE("$", FORMAT (Total1/1000000000, decimal & "bn")) ,
Total2 < 1000000000, CONCATENATE("$", FORMAT (COALESCE(Total1, 0)/1000000, decimal & "M")) ,
CONCATENATE("$", FORMAT (COALESCE(Total1, 0) , decimal)
))

This measure will convert it to text so I'm unable to use the Callout Value functions in the Card Graph.

Thanks in advance!

[amitchandak · Accepted solution]

@delithyotho , try like

Card graph =
Var Total1 = CALCULATE(SUM('MasterData'[Sum1])*1000000)
Var Total2 = CALCULATE(SUM('MasterData'[Sum2])*1000000)
Var decimal = "0.0"
RETURN
SWITCH ( TRUE() ,
Total2 >= 1000000000 , CONCATENATE("$", FORMAT (Total1/1000000000, "#,###.0") & "bn") ,
Total2 < 1000000000, CONCATENATE("$", FORMAT (COALESCE(Total1, 0)/1000000, "#,###.0" )& "M") ,
CONCATENATE("$", FORMAT (COALESCE(Total1, 0) , "#,###.0")
))