Hi,
There is a simple solution for this.
Open this PHP file:
/templates/flexible_lightmart/html/com_virtuemart/productdetaills/default.php
find this line:
$("#productPrice'.$this->product->virtuemart_product_id.' div.PricediscountAmount span.PricediscountAmount").append("<span class='.'FlexiblePercentage'.'> ('.$percentage.'%)</span>");
and replace it with this:
$("#productPrice'.$this->product->virtuemart_product_id.' div.PricediscountAmount").append("<span class='.'FlexiblePercentage'.'> ('.$percentage.'%)</span>");
the problem will be gone.
Cheers,
Support