Show percentage (of total) in groups

When you group a list view by a field and the rows show numeric totals, this module displays an extra percentage next to each group's total. The percentage tells you what share that group represents of the sum of all groups in the same column.

• It works in list views that are grouped (for example, sales grouped by salesperson or by country).
• The percentage appears only for numeric columns that already show an aggregate value (sum, average, etc.).
• The calculation is done automatically: the module adds up the totals of all groups in a column and then shows each group's share as a percentage.
• The percentage is shown before the actual total value, separated by a space, so it is easy to read.
• The table layout is adjusted automatically so that longer text (percentage plus value) does not get cut off.

This module does not add any new menu, model, or database field. It only changes how grouped list views are displayed in the web client. It applies to both the modern list view and the legacy list view used in some older screens.