They just state in a sentence that they did the calculation, and give a rough brutto/netto ratio.

Maybe the sensationalist "Lie" in the title was what misled you, I shall change it to "Spin".

(I guess they'll release the final numbers in early 2006 all fine, with full details, and a much milder spin - this press release must have had chanchellor-to-be Merkel and her future economy minister as their target, just when they decide on policy.)

_{*Lunatic*, n.
One whose delusions are out of fashion.}