10% Discount amount incorrect!

Hi,
Fantastic software btw.

www.dpi-uk.com/display

I've setup a discount code of 'signuk1' for 10% off. The checkout displays the incorrect discount amount but, correctly adds the total!
e.g

Total £ 695.00
Coupon -£ 83.40 --- This should be £69.50 10% of £695
Shipping £ 25.00
VAT £ 125.10
Final total £ 775.60

Many thanks Jason

It really would be lovely to get this sorted out for my customer... Any ideas anyone?

Never mind, realised when i got to office it was a case of replacing

echo $this->currencyHelper->format(@$this->coupon->discount_value*-1,@$this->coupon->discount_currency_id);
with
echo $this->currencyHelper->format(@$this->coupon->discount_value_without_tax*-1,@$this->coupon->discount_currency_id);

in the file 'cart' of the view 'checkout' that you can edit via the menu Display->Views.

Doh!