How did you calculate the "Click-through rate % (CTR)" with the Facebook ads source.
When I'm doing the calculation manually I don't have the result as you do...
CTR comes straight from Facebook Ads API and is not calculated by us. Facebook API documentation about the subject is following:
"Click-through rate for all clicks. The total number of clicks that you received (e.g. off-site clicks, Likes, event responses) divided by the number of impressions."