Complex sentence: McDonald's reported in August 2016 that, in a move to please health-conscious customers, would be replacing all HFCS in their buns with sugar in addition to a multitude of concessions cutting preservatives and other artificial additives from their menu items.
Split into simpler sentences: McDonald's reported in August 2016 that, in a move to please health-conscious customers, they would be replacing all HFCS in their buns with sugar. In addition, they would also cut out preservatives and other artificial additives from their menu items.