(Reuters) – Arm Ltd plans to cut 12% to 15% of its workforce, the British chip designer said on Monday, just over a month after the collapse of the firm’s $40 billion sale to U.S. chipmaker Nvidia Corp. Most of the job losses would be in the UK and the United States, the company said. “Like any business, Arm is continually reviewing its business plan to ensure the company has the right balance between opportunities and cost discipline,” Arm told Reuters in an emailed statement. “Unfortunately, this process includes proposed redundancies across Arm’s global workforce,” the company said. The Tel…