Price List - Mark up or Mark down Calculation

Price List - Mark up or Mark down Calculation

Hi,

I when i apply mark down in ITEM Rate with certian % , in my invoice im viewing the ITEM Rates with GST ie if im giving 10% discount on Sale (Sale price 100) in MARK Down which has 5% GSt, The price including GST will be 90 ( 85.71 (Basic) + 4.29(GST) ). i wanted in my invoice to split and show the basic amount + GST value seperately.

Thanks & Regards,
Raziq