Hi @COSTA,
Apologies for the delayed response on this, it looks like the topic was placed under the technical articles section instead of the Q&A.
Dealing with percentiles in pivot tables can always be tricky since they add in their own aggregation angles by default. If you have set to maximum, it may still be giving you the max but at a different scale than expected due to how the pivot table is put together.
Can you please confirm, Is that entire section below your screenshots all one calculated field? It’s a little hard to tell with some of the text blocking. If so, this is pretty complex scenario to digest through a topic thread. It may be easier to assist if you’re able to upload an anonymized version of your analysis to the Arena view, that way I can gain a better grasp on how the field is working: