examples/risky-model/Risk.Measures.dax

Tickets[Open Tickets] =
COUNTROWS(FILTER(ALL(Tickets), Tickets[Status] <> "Closed"))

Tickets[Overdue Tickets] =
CALCULATE(COUNTROWS(Tickets), Tickets[DueDate] < TODAY())

Tickets[Escalation Risk] =
DIVIDE([Overdue Tickets], [Open Tickets])

Tickets[Legacy Rank] =
SUMX(Tickets, EARLIER(Tickets[Priority]))