My parents live in Amsterdam and it's great. When I visit I pretty much just assume that people know at least some English.
Not really surprising considering that the Canadian province of Quebec (8M population out of 35M) is mostly French speaking.
On the other hand, the Netherlands is almost entirely Dutch speaking.
I don't know the word for what you've done, but Canadians isn't a language. I believe you meant to say was "Today a greater percentage of Dutch people than Canadians speak English." Or something more different and clearer yet.
I had no trouble understanding the title but I've reread your last sentence a few times and I still don't quite get it.