According to http://www.kitkat.co.uk/content/kitkatcollection http://www.kitkat.co.uk/content/kitkatcollection , about 54% of the mass is sugar, so reducing tha

According to http://www.kitkat.co.uk/content/kitkatcollection http://www.kitkat.co.uk/content/kitkatcollection , about 54% of the mass is sugar, so reducing that by 40% would cut the mass by roughly 22%.