I remember Bitcoin breaking into the $1000 range, ultimately reaching $1,140 before falling back to $150.
Dash reached $1500, before falling back to $40 and is now accumulating / stabilizing at around $90-$100. The '% decrease' was a bit higher with Dash (-97,3%), then with Bitcoin (-87%).
Price recovery (# of months / years to new ATH) just seems to take longer with Dash / Altcoins in general and looks to be more volatile.
The difference, however is that when Bitcoin reached $1000 the second time, near on 100% of the $1000 worth emerging from the chain was invested straight back into upwards difficulty adjustments, thereby supporting that price across the chain.
As Dash approaches $1000, only $400 of that will go towards upwards difficulty adjustments. The rest goes to sustaining the masternode network which at that point will cost around $350 MILLION a year to run.
$350 million that would otherwise have gone towards keeping the supply scarce, competitive attractive to mine.
So if Dash ever reaches $1000 again it will simply snap straight back down as it did the last time. The new supply paid towards masternodes can do that. Even if ALL the node collateral remains locked up and nobody sells a node, even is ALL miners hold and don't sell, just the masternode rewards alone are enough to crash the market since they are given out for free and are therefore at a profit-take all the way down to a price of zero.