Since 19MAY2015 the Dow Jones, when it was at a high of 18312.39, has lost over 2,100 points as of today. That’s something like 11.5%.
It was very close to dropping below 16000 last week. The Volkswagen crash (more pressure on Germany) and the Caterpillar decline (signals weakening large building projects) will take it below 16 in my opinion.