Luxury giant Mulberry has dispensed with the services of chief executive officer (CEO) Thierry Andretta because of falling sales and a sharp deteriorating in its share price. Andretta is to be replaced by Andreas Baldo, previously chief executive of Ganni, a mid-range luxury brand. He has also worked at Coccinelle and Marni Group. Andretta had been with Mulberry since 2015, having previously worked at rival brands LVMH and Kering. Since its establishment in 1971, Mulberry has been a staple on the British high street, including celebrity names such as Cara Delavigne, Kate Moss, Lana Del Ray and…