CBC's headline ("Canadian economy grew 0.2% in February") is factual - though I'd prefer if they just said GDP instead of "economy"

"Canada's economy is losing momentum" is an unqualified statement so it can't be factual - it doesn't mention the measurement, aggregation bucket or the comparison baseline. It's falsifiable but still quite subjective, because if you measure at a quarter-level analysts called it "decent". Their opening paragraph is more objective than the headline:

The Canadian economy lost momentum in February as it grew at a slower pace than both analyst expectations and Statistics Canada’s previous prediction

And if you yank out the unnecessary subjective addition:

The Canadian economy grew in February at a slower pace than both analyst expectations and Statistics Canada’s previous prediction

You can see how that would have made a more factual but less dramatic headline

Canada's economy grew in February less than predictions