From the article:
"A big reason for such a huge sum is that 1,807 of the federal governments public relations workers are paid $100,000 or more, up from 1,501 in 2012."
An increase to 1,807 workers from 1,501. An increase of 306 workers.
The real reason for the huge some is that for every federal employee there is a swamp creature or too making a bundle off of the privatization of government boodling.