The percentages really don't tell you that much. To illustrate with an extreme exemple, if the top 0.1% earns a million, and the government taxes a single dollar on them and nothing on anyone else, the top 0.1% would pay 100% of the taxes. But it obviously would not be enough to help people in need.
I don't know the particular situation for Canada, but I know that welfare benefits are getting worse in my country (France)