The Dow Jones industrials were down more than 4 percent from Oct. 9, when it posted a record high, the Los Angeles Times reported Monday. American markets were down to their lowest level in a month, the Times reported. The Friday stock-price decline in the United States bolstered concerns about the health of the economy and dropped Asian and European stocks sharply, the Times reported. Foreign investors worried that the United States mortgage crisis would hinder demand among American consumers for Asia’s exports, the Times reported.