I would believe any numbers that were objectively presented with sound methodology. Using a single call center study as evidence that worker productivity increases just doesn't make sense. Most work isn't anything like working in a call center.
Here is another misleading claim from that link:
> Working Remotely Can Increase Productivity up to 77%
But they then clarify that "77% of those who work remotely at least a few times per month show increased productivity." Productivity increasing by 77% is not the same as 77% of people experiencing any productivity gain. Also, they link to a source for this claim, but the link takes you to a blog spam page titled "43 Productivity Tools That Will Make Your Life Much Easier." There is no mention of the claim on this page.
I said this in a sibling comment, but according to our Jira metrics, my old team's productivity increased after both going fully remote and working one less hour each day. We didn't write anything about it, just giving you one personal anecdote where actual metrics were involved.
Here is another misleading claim from that link:
> Working Remotely Can Increase Productivity up to 77%
But they then clarify that "77% of those who work remotely at least a few times per month show increased productivity." Productivity increasing by 77% is not the same as 77% of people experiencing any productivity gain. Also, they link to a source for this claim, but the link takes you to a blog spam page titled "43 Productivity Tools That Will Make Your Life Much Easier." There is no mention of the claim on this page.