How to show amount in number card

This is my number card at current state.

I want to show the amount instead of the count.You can see there is specific amount for both 2 customers. i want show that in number card.

Example like this one.

Can anyone guide me with this?

@Sumith-2004 If your selected field is currency then auto populate the currency symbol and if you can show in your numeric field also then override number_card.js file code and add your custom condition

Second way is make your field to change numeric to currency then your problem are resolve

How can i make my field to change numeric to currency. i mean where should i do this in lead doctype or number card.