"Falling like a rock?" Does an approval number of "50" in September falling down to "38" in November qualify?

Bloomberg:

Global investors’ confidence in President Barack Obama plunged during the past two months after the government shutdown, a new poll shows, even as stocks traded at record highs and bond yields remained near historic lows.

Just 38 percent of respondents to a Bloomberg Global Poll view Obama favorably as they anticipate another shutdown and more damage to the U.S. economy next year from political gridlock. That’s the lowest since the question was first asked in July 2009 and down from 50 percent in September.