You added the editorial "rapidly", which doesn't appear anywhere in the article linked because the fall isn't rapid. It fell 1.1%, which is not rapid, especial

You added the editorial "rapidly", which doesn't appear anywhere in the article linked because the fall isn't rapid. It fell 1.1%, which is not rapid, especially for something that was already rated a junk bond. And without any data on the bond's previous price volatility it isn't impossible to say whether 1.1% is worse than it had, say, the week before.