1029 GMT August 11, 2020
It was the deepest decline since the government began keeping records in 1947 and three times more severe than the prior record of 10 percent set in 1958, BBC reported.
Reduced spending on services such as health care drove the fall.
Economists have said they expected to see the sharpest drop in the second quarter, with recovery thereafter.
But as virus cases in the US surge and some areas reimpose restrictions on activity, the rebound is showing signs of stalling.
More than 1.4 million people filed new claims for unemployment last week, up slightly from the prior week for the second week in a row. Other data points to spending cuts and falls in confidence in July.
Jerome Powell, the head of America's central bank, warned of renewed slowdown, describing the downturn as the "most severe in our lifetimes".
He urged further government spending to help American households and businesses weather the crisis.
That call was echoed by other business leaders on Thursday as the figures brought into focus the scale of the economic crisis facing the country.
"The staggering news of the historic decline of the gross domestic product in the second quarter should shock us all," said Neil Bradley, chief policy officer at the US Chamber of Commerce, a business lobby group. "This jarring news should compel Congress to move swiftly."
The International Monetary Fund has predicted that global growth will fall by 4.9 percent this year. On Thursday, Germany reported a record quarterly decline of 10.1 percent, while Mexico's economy also reported a double digit contraction.
Compared with the same quarter a year ago, the US economy contracted 9.5 percent. Exports and imports were both down more than 20 percent from a year ago, while consumer spending — the main driver of the US economy — fell 10.7 percent year-on-year.
The US has lost nearly 15 million jobs since February, despite strong hiring in May and June. The US census estimates more than half of American adults live in households that have seen incomes cut since the pandemic.
Economists warned it will take years for the US to recover from the devastation.
"Even when the economy saw rapid bounce-back in May and June, the COVID-19 economic shock inflicted so much damage in earlier months that the net result was an economic catastrophe for the second quarter," wrote Josh Bivens, director of research at the Economic Policy Institute.
Congress is debating another economic relief package but it seems unlikely to reach a deal before an emergency $600 supplement to unemployment benefits expires this week, threatening another economic shock.
"The fact that initial jobless claims have risen for a second week is worrying and underscores that the nascent consumption recovery is at risk," said Madhavi Bokil, vice president of Moody's Investors Service.