z i m m e r h o l d i n g s , i n c . a n d s u b s i d i a r i e s 2 0 0 3 f o r m 1 0 - k notes to consolidated financial statements ( continued ) the unaudited pro forma results for 2003 include events or changes in circumstances indicate that the carrying $ 90.4 million of expense related to centerpulse hip and knee value of an asset may not be recoverable . an impairment loss litigation , $ 54.4 million of cash income tax benefits as a result would be recognized when estimated future cash flows of centerpulse electing to carry back its 2002 u.s . federal net relating to the asset are less than its carrying amount . operating loss for 5 years versus 10 years , which resulted in depreciation of instruments is recognized as selling , general more losses being carried forward to future years and less and administrative expense , consistent with the classification tax credits going unutilized due to the shorter carry back of instrument cost in periods prior to january 1 , 2003 . period and an $ 8.0 million gain on sale of orquest inc. , an prior to january 1 , 2003 , undeployed instruments were investment previously held by centerpulse . the unaudited carried as a prepaid expense at cost , net of allowances for pro forma results are not necessarily indicative either of the obsolescence ( $ 54.8 million , net , at december 31 , 2002 ) , and results of operations that actually would have resulted had recognized in selling , general and administrative expense in the exchange offers been in effect at the beginning of the the year in which the instruments were placed into service . respective years or of future results . the new method of accounting for instruments was adopted to recognize the cost of these important assets of the transfx company 2019s business within the consolidated balance sheet on june 25 , 2003 , the company acquired the transfx and meaningfully allocate the cost of these assets over the external fixation system product line from immedica , inc . periods benefited , typically five years . for approximately $ 14.8 million cash , which has been the effect of the change during the year ended allocated primarily to goodwill and technology based december 31 , 2003 was to increase earnings before intangible assets . the company has sold the transfx cumulative effect of change in accounting principle by product line since early 2001 under a distribution agreement $ 26.8 million ( $ 17.8 million net of tax ) , or $ 0.08 per diluted with immedica . share . the cumulative effect adjustment of $ 55.1 million ( net of income taxes of $ 34.0 million ) to retroactively apply the implex corp . new capitalization method as if applied in years prior to 2003 on march 2 , 2004 , the company entered into an is included in earnings during the year ended december 31 , amended and restated merger agreement relating to the 2003 . the pro forma amounts shown on the consolidated acquisition of implex corp . ( 2018 2018implex 2019 2019 ) , a privately held statement of earnings have been adjusted for the effect of orthopaedics company based in new jersey , for cash . each the retroactive application on depreciation and related share of implex stock will be converted into the right to income taxes . receive cash having an aggregate value of approximately $ 108.0 million at closing and additional cash earn-out 5 . inventories payments that are contingent on the growth of implex inventories at december 31 , 2003 and 2002 , consist of product sales through 2006 . the net value transferred at the following ( in millions ) : closing will be approximately $ 89 million , which includes .

1	2003	2002
2	finished goods	$ 384.3	$ 206.7
3	raw materials and work in progress	90.8	50.9
4	inventory step-up	52.6	2013
5	inventories net	$ 527.7	$ 257.6

made by zimmer to implex pursuant to their existing alliance raw materials and work in progress 90.8 50.9 arrangement , escrow and other items . the acquisition will be inventory step-up 52.6 2013 accounted for under the purchase method of accounting . inventories , net $ 527.7 $ 257.6 reserves for obsolete and slow-moving inventory at4 . change in accounting principle december 31 , 2003 and 2002 were $ 47.4 million and instruments are hand held devices used by orthopaedic $ 45.5 million , respectively . provisions charged to expense surgeons during total joint replacement and other surgical were $ 11.6 million , $ 6.0 million and $ 11.9 million for the procedures . effective january 1 , 2003 , instruments are years ended december 31 , 2003 , 2002 and 2001 , respectively . recognized as long-lived assets and are included in property , amounts written off against the reserve were $ 11.7 million , plant and equipment . undeployed instruments are carried at $ 7.1 million and $ 8.5 million for the years ended cost , net of allowances for obsolescence . instruments in the december 31 , 2003 , 2002 and 2001 , respectively . field are carried at cost less accumulated depreciation . following the acquisition of centerpulse , the company depreciation is computed using the straight-line method established a common approach for estimating excess based on average estimated useful lives , determined inventory and instruments . this change in estimate resulted principally in reference to associated product life cycles , in a charge to earnings of $ 3.0 million after tax in the fourth primarily five years . in accordance with sfas no . 144 , the quarter . company reviews instruments for impairment whenever .

Previous questions in this conversation: what were net inventories in 2003?
Previous answers: 527.7
Question: what were they in 2002?
Answer: 257.6