We provide data on your Facebook page over the last 3 months (which then is compared to data from the previous 3 months). On Facebook Insights you only have the option to view data from today, yesterday, last 7 days and last 28 days.
Different programmes may also have slightly different algorithms for measuring data. Facebook, for example, when measuring engagement rate takes into account likes, comments and shares. But some of these engagements are ranked higher than others in different programmes.