string_format round up not work

[revert]

Hi, i have small override in product-list.tpl where is reduction percentage calculated from amount of price:

{assign var='precentage_amount' value=(($product.price_without_reduction-$product.price)/$product.price_without_reduction*100)}
// and the echo
<span id="reduction_amount_display">
 -{$precentage_amount|string_format:"%d"}%
</span>

 

$precentage_amount is 39.891591

and string format of this number without decimals is 39 ??? it may be 40

how to setup roundup up?

 

thank you!

[NemoPS]

I think that string format simply cuts the decimal part away. Try with |round