According to this article prior to the change: https://www.theglobeandmail.com/news/toronto/why-all-the-fus...
it was 65,000 transit commuters per day vs 20,000 vehicles per day.
edit, here is the latest data from the city: https://www.toronto.ca/wp-content/uploads/2018/11/8fe2-King-... (sept/oct is not yet available which is unfortunate because the baseline is october 2017)