Concentration in percent question

Harbour sediments in the New Bedford Ma area contain PCB's at levels up to 190 000 ppm according to a report. What is the concentration in percent?

ppm = ug / g
percent = g / 100 g

(190,000 ug PCB / 1 g sediment) x (1 g / 1,000,000 ug) = 0.19 g PCB / 1 g sediment (x 100/100) =
19 g PCB / 100 g sediment ... 19%