划线价格优化，显示省了多少钱及多少百分比

代码：

{% if product.compare_at_price > product.price %}
<p style=”margin:0px 0 0px 0;font-size:14px”>
<span style=”color:#ed251f”> Save
{{ product.compare_at_price_max | minus:product.price | difference:product.compare_at_price_max | money }}
</span>
<span style=”color:#ed251f”;font-size:14px”>({{ product.compare_at_price_max | minus:product.price | times:100 | divided_by:product.compare_at_price_max }}%)
</span>
</p>
{% endif %}