thanks for your answer,
however, where exactly should I put that?

<field name="your field" widget="percentage"/>

okay, thanks.
but the field is not there already, how can I directly show it in xml while the field is not in python yet?

Inherit report do change in xml file it will work

ok, i have checked the xml file, which is "account_report_view.xml"
but there, i can only see the fields of setting, not the actual report lines
fyi, those reports are not the direct model, they are the objects made from "account.financial.html.report" model

In accounting report, it shows account.move.line record so you can add it in accout.move.line amount field

ok thanks. btw you mean the "account_accounting_report.py" one or the "account_report.py" one?

Hi Jagdish,

I am working on something similar, how do i add let's say a budget column to the Profit and Loss statement?