Replace decimal with comma

Hi there, I am trying to display the sum of a column on a card, and I cannot seem to change the decimal to a comma. I have attempted to select comma on the column tools, but that doesn't work. The data type in Power Query is a decimal number; do I need to change that to a whole number? I've tried several data types in power query, but that doesn't seem to help. The card currently reads as $16.12M, but I would like it to display as $16,121,411. Should I create a measure? Thank you for reading; I appreciate any advice.