By Richard Horgan Los Angeles (Knewz) — In 2021, President Biden earned a 57 percent Gallup confidence rating for his handling of the economy. That was above the general average of 52 percent for U.S. presidents. But the latest Gallup “Economy and Personal Finance Poll,” conducted April 1-19, tells a dramatically different story. Biden’s economy confidence rating has plummeted to 40 percent. It’s the same arc for Federal Reserve Chairman Jerome Powell. A year ago, he was getting the thumbs up from 55 percent of Americans. Now, it’s down to 42 percent. Biden and Powell have been dealing with th…