Complex sentence: Carillion's share price dropped from 192p in July to 45p by the end of August 2017, taking its market capitalisation from almost £1bn to less than £250m; as a result, the contractor was demoted from the FTSE 250 Index.
Split into simpler sentences: Carillion's share price dropped from 192p in July to 45p by the end of August 2017, taking its market capitalisation from almost £1bn to less than £250m. As a result, the contractor was demoted from the FTSE 250 Index.