Supergroup shares took a significant hit after luxury brand Burberry's Chief Executive Officer Angela Ahrendts told French newspaper Les Echos that the slowdown in China may be more than temporary; in fact, it could be the new reality. SuperGroup said back in July that China represents an "exciting opportunity" for its e-commerce business. Meanwhile, Xi Jinping, China's President, said that while his country's economic growth rate of 7% was "reasonable", he believed the global economic recovery was likely to be a "long and tortuous process". UK food producer Cranswick also fell, despite a 15% increase in total sales in the first half, as it warned that pig prices reached a record high during the period. The firm said that the extent of and time-lag involved in recovering these higher input costs, along with the start-up costs of its pastry business, will mean that first-half operating profits will be flat year-on-year.Meanwhile, Petra Diamonds rose after saying it remains on track to meet its production guidance of three million carats of diamonds for fiscal year 2014 following a strong production rate in the fiscal first quarter.Carpetright was also on the up, regaining last week's lost ground - the group on Friday announced the departure of Chief Executive Darren Shapland as it warned falling sales meant full-year profits would be 'significantly' below its previous expectations.FTSE 250 - RisersAlent (ALNT) 334.20p +2.83%Petra Diamonds Ltd.(DI) (PDL) 119.40p +2.58%Cable & Wireless Communications (CWC) 40.25p +2.26%Carpetright (CPR) 626.50p +1.62%Evraz (EVR) 125.20p +1.54%Bank of Georgia Holdings (BGEO) 2,028.00p +1.50%Moneysupermarket.com Group (MONY) 149.10p +1.08%NMC Health (NMC) 330.00p +1.07%Spirent Communications (SPT) 127.50p +1.03%Ocado Group (OCDO) 424.80p +0.93%FTSE 250 - FallersSupergroup (SGP) 1,123.00p -4.51%Cranswick (CWK) 1,099.00p -4.10%Betfair Group (BET) 974.50p -3.80%Imagination Technologies Group (IMG) 288.70p -3.57%esure Group (ESUR) 229.00p -3.17%Galliford Try (GFRD) 1,024.00p -2.85%Telecity Group (TCY) 785.00p -2.73%EnQuest (ENQ) 121.70p -2.64%Polymetal International (POLY) 608.50p -2.48%Synergy Health (SYR) 1,040.00p -2.44%NR