@stefano_guerrieri, welcome to the forum!
You can make the tables you need in Kibana as visualizations using Filter Ratios and the filters that TSVB offers. I gave a guide on how to do this in this post If you select your Past Due field as the 'Carrier' from the example in the post I reference and then use the month of January as the numerator field and February as the denominator, you'll get the ratio you need. You'll have to set the format for the field as percentage in the options tab for the series.
If you want a quick introduction to Kibana, here's a great webinaar, for an intro to visualizations in Kibana, I recommend this guide.
Good luck!
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