Complex sentence: Of the business school graduates, 72% are employed in industry (of whom 70% are based in the UK or work for UK firms), 10% are in consulting, 12% are in Finance and the remaining 6% are in other occupations.
Split into simpler sentences: Of the business school graduates, a total of 72% are employed in industry and 70% of these are based in the UK or work for UK firms. A total of 10% are in consulting, with 12% in Finance and the remaining 6% in other occupations.