Information provided could not be converted to tonnes. From the Hilton CR Report May 2017 Factsheet page 12, it stated "Our reduced carbon output is the
equivalent of taking 148,058 cars off
the road from 2009 to 2015." Additionally, the 2014-2015 Corporate Sustainability Report page 33, Carbon Factsheet page 1 stated an absolute carbon reduction of 1.6% in 2014 vs. 2013.