Complex sentence: Coolhaus went from 3 Whole Foods retail partner stores in spring 2011 carrying 4 SKU's, to over 2,000 by June 2014 and 2,500 by September 2014, carrying 24 SKU's as of December 2017.
Split into simpler sentences: Coolhaus went from 3 retail partner stores in spring 2011 to over 2,000 by June 2014 and 2,500 by September 2014. One of the 3 retail partner stores was Whole Foods with 4 SKU's in 2011 and grew to 24 SKU's as of December 2017.