There would be 30 people on one bus, and then suddenly there were only 20 and 20 had gone over to a GO transit, but they were not caught in it, and then there were 40 passengers, not 30 any more, but they showed a decline.
Il y aurait 30 passagers dans un autocar, chiffre qui passerait tout d'un coup à 20, et 20 voyageurs auraient emprunté le réseau GO, mais on n'en aurait pas tenu compte, et ensuite on se retrouverait avec 40 passagers (pas 30), mais les données font état d'une diminution.