Traffic at stores on Black Friday fell by 52.1% compared with last year, as Americans by and large eschewed heading to malls and queuing up in lines for shopping online, according to preliminary data from Sensormatic Solutions. For the six key weeks of the holiday season this year, traffic in retail stores is expected to be down 22% to 25% year over year, an earlier forecast by Sensormatic Solutions said. “We knew Black Friday [traffic] was going to be down, we just didn’t know how much it was going to be down,” said Brian Field, a senior director of global retail consulting at Sensormatic Solutions. “Shoppers are ... (full story)