(Reuters) -French outsourcing and call centre group Teleperformance on Thursday said it expected lower growth in 2022, due to a decrease in contributions from COVID-related contracts. Teleperformance, which employs more than 420,000 call centre workers worldwide, forecast like-for-like revenue growth this year above 5%, and a 15.4% earnings before interest, taxes and amortization (EBITA) margin before non-recurring items. For 2021, it posted an EBITA margin before non-recurring items at 15.1%, on revenue of 7.12 billion euros ($8.09 billion), up 25.7% like-for-like, above Refinitiv estimates o…