They provide decrease in percentage but no specific numbers in their Website.

"Since 2009, our greenhouse emissions have reduced by more than 30 per cent, and we met our 2020 target for emissions reduction four years early in 2016. In FY18, greenhouse gas emissions decreased by 2.5 per cent compared with the previous year."

Information on Coles is found on Westfarmers Sustainability Report 2018 p.53 - 1721 CO2e tonnes, however no indication of whether it is direct or indirect.