Hello, I want to share my knowledge regarding Level of Detail (LOD) - Fixed as in the features in Tableau.
Here's an example:
- DATA

In this case, I want to get the percentage value of each Indicator compared to its Revenue value, for example COGS to Revenue (formula: %Value=COGS value/Revenue value).
Step 1.

Create custom measure with filter by Indicator = Revenue
then Save and hide from visualization.

Step 2.
Create table calculation with this calculation :
sum(view_table.custom_field)
then Save and hide from visualization.

Step 3.
Create table calculation for %Value with this calculation :
sum_value/revenue
then Save and hide from visualization.

- VISUALIZATION

Regarding to the visualization, I want to hide the Revenue indicator.
First, the thing to note for this is don’t use filter ! Because it will affect the Revenue value, so use Limit Displayed Rows on Edit Visualization (Plot Tab)

I choose hide first rows because the Revenue value has sorted on the first row.
Hope this can help your issue!
Via