That label of Osmocote 19-5-8, listed above on this thread, is kind of odd.
The footnote listing of slow-release percentages, which presumably are percentages of the whole content of the bag, same as the percentages listed in the main column, are almost equal to the total percent of each element, which is very good, and meets one's expectations for a fully-coated mix such as this. [If the slow-release percentages are viewed as only percentages of the total of each individual element, then the amount of slow-release action is very low and not credible for fully-coated products.]
EXCEPT, that the slow-release soluble Potassium is somehow 3% higher than the total soluble Potassium in the bag!