PARIS--(BUSINESS WIRE)--Regulatory News: Teleperformance (Paris:RCF), the global leader in outsourced multichannel customer experience management, today released its quarterly review for the period ended March 31, 2015. SUSTAINED LIKE-FOR-LIKE REVENUE GROWTH Revenue: €831 million Like-for-like growth: + 10.0% Solid growth dynamic in every region 2015 GUIDANCE CONFIRMED Like-for-like revenue growth of at least 7% Increase in the EBITA margin before non-recurring items to at least 10.3% € million