report_purchasequotation.xml

<?xml version="1.1" encoding="utf-8"?>
<odoo>
    <template id="report_purchasequotation_louve" inherit_id="purchase.report_purchasequotation_document">
        <xpath expr="//table[@class='table table-condensed'][1]/thead/tr//th[3]" position="replace"/>
        <xpath expr="//table[@class='table table-condensed'][1]/thead/tr//th[2]" position="replace"/>
        <xpath expr="//table[@class='table table-condensed'][1]/thead/tr//th[1]" position="before">
            <th class="text-right"><strong>Nb of Packages</strong></th>
            <th class="text-right"><strong>Package qty</strong></th>
            <th class="text-right"><strong>Qty</strong></th>
        </xpath>
        <xpath expr="//table[@class='table table-condensed'][1]/tbody/tr//td[3]" position="replace"/>
        <xpath expr="//table[@class='table table-condensed'][1]/tbody/tr//td[2]" position="replace"/>
        <xpath expr="//table[@class='table table-condensed'][1]/tbody/tr//td[1]" position="before">
            <td class="text-right">
                <span t-field="order_line.product_qty_package"/>
            </td>
            <td class="text-right">
                <span t-field="order_line.package_qty"/>
            </td>
            <td class="text-right">
                <span t-field="order_line.product_qty"/>
            </td>
        </xpath>
    </template>
</odoo>