How to show discount percent and discount amount on receipt

V5 Question
1

Dear all,
I would like to ask how to show discount percent and discount amount on receipt
here is my html code
[LAYOUT]
– Bill 01

ONE CAFE SHOP
#31B st. 598, Khan ToulKork
Tel:095 280 078
RECEIPT
Ticket No: {TICKET NO}
Customer: {ENTITY NAME: Customer}
{ENTITIES}
Date: {TICKET DATE} | {TICKET TIME} Cashier: {USER NAME}
{ORDERS}
No
Description
Qty
Price
Amt
{DISCOUNTS} 
<tr>
	<td align=Left>TOTAL(USD)</td>
	<td align=Right><div style="padding-right: 25px;">$ <span style="float:right; background-color: #000;color:#fff;font-weight:bold">{TICKET TOTAL}</span></div></td>
</tr>
<tr>
	<td align=Left>TOTAL (RIEL)</td>
	<td align=Right><div style="padding-right: 25px;"><span style="background-color: #000;color:#fff;font-weight:bold">R [=F(TN('{TICKET TOTAL}')*4100,'#,##0.##')] </span></div></td>
</tr>
<tr>
	<td align=Left>Recieved</td>
	<td align=Right><div style="padding-right: 25px;">{TENDERED TOTAL}</div></td>
</tr>
<tr>
	<td align=Left>Change</td>
	<td align=Right><div style="padding-right: 25px;">{CHANGE TOTAL}</div></td>
</tr>
</tbody>
-------------------------------------------------------------
Sub-Total
$ {PLAIN TOTAL: }
---------------------------------------------------------------
Thank you!
POWER BY: ONE SOLUTIONS

[ORDERS]
– Default format for orders


{ORDER INDEX}.
{NAME}
{QUANTITY}
{PRICE}
$ {TOTAL PRICE}

[ORDERS:Void]
– Nothing will print for void lines

[ENTITIES:Table]
– Table entity format
Table: {ENTITY NAME}

[PAYMENTS]


{PAYMENT NAME}: {PAYMENT AMOUNT}

[DISCOUNTS]

{CALCULATION NAME} ({CALCULATION AMOUNT}%)
{CALCULATION TOTAL}
2

You have two unecessary brackets () on {CALCULATION AMOUNT}