KPI cards compare against another period
A card's comparison could only ever run over the same dates as its value. It can now compare against another period — last month, last year, any two dates — and against its own filters — so "revenue vs last month" and "France vs Germany" are one card each.
Period
The Comparison section of the card editor has a new Period field: pick a relative range such as Last month or Last year, or enter two dates. It replaces the card's date range — the tab's date filter or the card's own — for the comparison only, and a relative range moves with the calendar. Leave it empty to compare over the same dates as the value.
Comparison filters
Filters under the comparison apply to the comparison only. One on the same field as a card or tab filter replaces it; everything else stays shared. Both knobs combine: last year, region = DE.
The card names what it compares against right under the change, and Axi can build these cards too — ask for a KPI "vs last month".