Complex sentence: The Hot Country Songs chart methodology was changed starting with the October 20,2012 issue to match the "Billboard" Hot 100: digital downloads and streaming data are combined with airplay from all radio formats to determine position.
Split into simpler sentences: The Hot Country Songs chart methodology was changed starting with the October 20,2012 issue to match that of the "Billboard" Hot 100. Digital downloads and streaming data are now combined with airplay from all radio formats to determine position.