
So the numbers went from roughly 9% to 25% overnight as part of the readjustment? This would suggest that the event was projected to be around the 25% mark right now.
9/25 = 0.36 or 36%
So basically, the event over the past week has roughly 36% the number of players that their own internal estimates had budgeted for. Given that ZOS know exactly how many copies of Solstice have been sold and thus make the projections with, this is still a very low turnout.
Given that the events in Phase 1 have generally been considered uninteresting, I think a lot of players are coming in and doing the dailies and then calling it quits for that day. So expect more fudging than your regional candy chain over the next three weeks.