If the 284,000 is correct and if on average 10 people got dunked every assembly district or circuit you would have to have 28,400 such events in the year 2017 or 284,000/10 = 28,400.
Now if the average is 1.5 per circuit and district event then the amount of events would have to be: 284,000/1.5 = 189,333 . Since we hear of many assemblies where nobody gets baptized or only 1, 2, or 3 so if we add this up 6 and divide by 4 we get and 1.5 for an average.
Say USA has 52,000 congregation divide 26 into 52,000 = 2,000 circuits which would have 4,000 circuit events and add another 2000(district events) = 6,000 x 1.5 = 9000 baptized for the US. This might be away to put figures into some kind of perspective. Then divide 9000 by 284,000 and you get 3% of the total growth worldwide, with say 97% coming from the rest of the world.
This seems to indicate a serious fudging of figure designed to keep R&F members from the magnitude of those leaving the Organization which would lead to an even greater decline.
Massive sell off of KHs and decline in growth into negative figures can have a very alarming effect on the rest of the organizational captives and for this reason as well as their lack of transparency I would never trust the WT corporations printed figures.