republic services , inc . notes to consolidated financial statements 2014 ( continued ) 16 . financial instruments fuel hedges we have entered into multiple swap agreements designated as cash flow hedges to mitigate some of our exposure related to changes in diesel fuel prices . these swaps qualified for , and were designated as , effective hedges of changes in the prices of forecasted diesel fuel purchases ( fuel hedges ) . the following table summarizes our outstanding fuel hedges as of december 31 , 2013 : year gallons hedged weighted average contract price per gallon .

gallons hedged: 2014: 27000000
2015: 18000000
2016: 12000000
weighted average contractprice per gallon: 2014: 3.81
2015: 3.74
2016: 3.68

if the national u.s . on-highway average price for a gallon of diesel fuel as published by the department of energy exceeds the contract price per gallon , we receive the difference between the average price and the contract price ( multiplied by the notional gallons ) from the counterparty . if the average price is less than the contract price per gallon , we pay the difference to the counterparty . the fair values of our fuel hedges are determined using standard option valuation models with assumptions about commodity prices being based on those observed in underlying markets ( level 2 in the fair value hierarchy ) . the aggregate fair values of our outstanding fuel hedges as of december 31 , 2013 and 2012 were current assets of $ 6.7 million and $ 3.1 million , respectively , and current liabilities of $ 0.1 million and $ 0.4 million , respectively , and have been recorded in other prepaid expenses and other current assets and other accrued liabilities in our consolidated balance sheets , respectively . the ineffective portions of the changes in fair values resulted in ( losses ) gains of less than $ 0.1 million for the years ended december 31 , 2013 , 2012 and 2011 , and have been recorded in other income ( expense ) , net in our consolidated statements of income . total gain ( loss ) recognized in other comprehensive income for fuel hedges ( the effective portion ) was $ 2.4 million , $ 3.4 million and $ ( 1.7 ) million , for the years ended december 31 , 2013 , 2012 and 2011 , respectively . recycling commodity hedges our revenue from sale of recycling commodities is primarily from sales of old corrugated cardboard ( occ ) and old newspaper ( onp ) . we use derivative instruments such as swaps and costless collars designated as cash flow hedges to manage our exposure to changes in prices of these commodities . we have entered into multiple agreements related to the forecasted occ and onp sales . the agreements qualified for , and were designated as , effective hedges of changes in the prices of certain forecasted recycling commodity sales ( commodity hedges ) . we entered into costless collar agreements on forecasted sales of occ and onp . the agreements involve combining a purchased put option giving us the right to sell occ and onp at an established floor strike price with a written call option obligating us to deliver occ and onp at an established cap strike price . the puts and calls have the same settlement dates , are net settled in cash on such dates and have the same terms to expiration . the contemporaneous combination of options resulted in no net premium for us and represent costless collars . under these agreements , we will make or receive no payments as long as the settlement price is between the floor price and cap price ; however , if the settlement price is above the cap , we will pay the counterparty an amount equal to the excess of the settlement price over the cap times the monthly volumes hedged . if the settlement price .

Questions:
what was the difference in the total gain recognized in other comprehensive income for fuel hedges from 2012 to 2013?
what was that gain in 2012?
and how much does that difference represent percentually in comparison to this previous gain?

Answers:
1
3.4
-29.4%