According to the reports from the UN mission that was allowed to enter the territory—for the first time in a couple of decades—as well as humanitarian organizations, the reports are that virtually all of the ethnic Armenian population has left.
Again, the UN reported at one point finding no more than 50 people. The largest estimates I have seen are still under 100 people. The vast majority, and effectively the totality of the population, are believed now to have crossed into Armenia.