AccountingForm

AccountingForm[expr] prints with all numbers in expr given in standard accounting notation.

AccountingForm[expr, n] prints with numbers given to n-digit precision.

Examples

Display a number in accounting form:

AccountingForm[1234567.89]
(* 1,234,567.89 *)

Display negative numbers with parentheses:

AccountingForm[-1234.56]
(* (1,234.56) *)

Please visit the official Wolfram Language Reference for more details.