New York, Dhu-AlQa'dah 14, 1439, Jul 27, 2018, SPA -- Twitter shares sank by 20 per cent on Friday after the company reported a decline in users, a day after Facebook suffered its biggest-ever one-day drop, reported by dpa. The social media platform closed at 34.12 dollars, down 8.82 dollars from Thursday. Facebook shares also closed down on Friday at 174.89 dollars, after plunging 19 per cent on Thursday after issuing a warning of slowing growth revenue. Twitter's decline takes the stock price back to the level it was at in June, but the 20 per cent drop was the largest in four years. The company has been publicly traded since November 2013. Twitter said in a statement its monthly users dropped by 1 million to 335 million in the second quarter. Although the figure is 9 million more than a year earlier, the company also predicted further declines as it continues to purge fake accounts. --SPA 01:12 LOCAL TIME 22:12 GMT 0021 www.spa.gov.sa/w722757