On page one under the heading 'Progress' the article states that (PepsiCo) "consumed nearly 20 million Gigajoules of fuel, of which nearly 7% was from renewable sources".
to find 7% of 20 million you multiply 20 million by 0.07 to get 1.4 million Gigajoules.
Therefore PepsiCo's fuel consumption from renewable sources is 1.4 million Gigajoules.