year ended december 31 , 2010 compared to year ended december 31 , 2009 net revenues increased $ 207.5 million , or 24.2% ( 24.2 % ) , to $ 1063.9 million in 2010 from $ 856.4 million in 2009 . net revenues by product category are summarized below: .

year ended december 31 , 2010: apparel: 853493
footwear: 127175
accessories: 43882
total net sales: 1024550
license revenues: 39377
total net revenues: 1063927
year ended december 31 , 2009: apparel: 651779
footwear: 136224
accessories: 35077
total net sales: 823080
license revenues: 33331
total net revenues: 856411
year ended december 31 , $ change: apparel: 201714
footwear: -9049
accessories: 8805
total net sales: 201470
license revenues: 6046
total net revenues: 207516
year ended december 31 , % (  % ) change: apparel: -30.9
footwear: -6.6
accessories: 25.1
total net sales: 24.5
license revenues: 18.1
total net revenues: -24.2

net sales increased $ 201.5 million , or 24.5% ( 24.5 % ) , to $ 1024.6 million in 2010 from $ 823.1 million in 2009 as noted in the table above . the increase in net sales primarily reflects : 2022 $ 88.9 million , or 56.8% ( 56.8 % ) , increase in direct to consumer sales , which includes 19 additional stores in 2010 ; and 2022 unit growth driven by increased distribution and new offerings in multiple product categories , most significantly in our training , base layer , mountain , golf and underwear categories ; partially offset by 2022 $ 9.0 million decrease in footwear sales driven primarily by a decline in running and training footwear sales . license revenues increased $ 6.1 million , or 18.1% ( 18.1 % ) , to $ 39.4 million in 2010 from $ 33.3 million in 2009 . this increase in license revenues was primarily a result of increased sales by our licensees due to increased distribution and continued unit volume growth . we have developed our own headwear and bags , and beginning in 2011 , these products are being sold by us rather than by one of our licensees . gross profit increased $ 120.4 million to $ 530.5 million in 2010 from $ 410.1 million in 2009 . gross profit as a percentage of net revenues , or gross margin , increased 200 basis points to 49.9% ( 49.9 % ) in 2010 compared to 47.9% ( 47.9 % ) in 2009 . the increase in gross margin percentage was primarily driven by the following : 2022 approximate 100 basis point increase driven by increased direct to consumer higher margin sales ; 2022 approximate 50 basis point increase driven by decreased sales markdowns and returns , primarily due to improved sell-through rates at retail ; and 2022 approximate 50 basis point increase driven primarily by liquidation sales and related inventory reserve reversals . the current year period benefited from reversals of inventory reserves established in the prior year relative to certain cleated footwear , sport specific apparel and gloves . these products have historically been more difficult to liquidate at favorable prices . selling , general and administrative expenses increased $ 93.3 million to $ 418.2 million in 2010 from $ 324.9 million in 2009 . as a percentage of net revenues , selling , general and administrative expenses increased to 39.3% ( 39.3 % ) in 2010 from 37.9% ( 37.9 % ) in 2009 . these changes were primarily attributable to the following : 2022 marketing costs increased $ 19.3 million to $ 128.2 million in 2010 from $ 108.9 million in 2009 primarily due to an increase in sponsorship of events and collegiate and professional teams and athletes , increased television and digital campaign costs , including media campaigns for specific customers and additional personnel costs . in addition , we incurred increased expenses for our performance incentive plan as compared to the prior year . as a percentage of net revenues , marketing costs decreased to 12.0% ( 12.0 % ) in 2010 from 12.7% ( 12.7 % ) in 2009 primarily due to decreased marketing costs for specific customers. .

Questions:
what was the gross profit in 2010?
and what was it in 2009?
what was, then, the change over the year?
what was the gross profit in 2009?
and how much does that change represent in relation to this 2009 gross profit, in percentage?

Answers:
530.5
120.4
410.1
120.4
341%