"Because of EU we have to charge steep tariffs on food imports not from EU, which is most of it"

https://qz.com/716156/the-british-import-a-quarter-of-their-food-from-the-eu-and-thats-a-problem/


The Quartz article clearly shows that just 19% of food is not either home produced (54%) or sourced from the EU (27%)

Could someone erudite explain to me when 19% became "most of it"