How to compare most recent daily metrics with previous day's metrics

This is probably a simple one for someone who knows what they are doing.

I have some metrics that are collected M-F, and everything from a given day has the same timestamp. I'd like to compare the most recent daily set with the set from the previous day.

E.g. something like:

{timestamp=2/7/2019, foo=1}
{timestamp=2/7/2019, bar=2}

{timestamp=2/8/2019, foo=1}
{timestamp=2/8/2019, bar=3}

And I'd like to give a table of the most recent delta foo & delta bar. I can't use ranges relative to 'now', because the latest run isn't necessarily within the last 24 hours (e.g. most recent run is Friday and the query is early Monday). I would bet that it's a simple query, but I can't figure out how to tell kibana which data I want it to use. Anybody?

Hi Steve, I recently answered a similar question and suggested the user use Timelion to create a visualization. It will appear as a chart, not a table, but at least it will allow you to compare values from one time to a previous time. Can you take a look at Adding time range query to one column of a Data table visualization in kibana and let me know if it helps?

Thanks,
CJ