the fair value of the interest agreements at december 31 , 2007 and december 31 , 2006 was $ 3 million and $ 1 million , respectively . the company is exposed to credit loss in the event of nonperformance by the counterparties to its swap contracts . the company minimizes its credit risk on these transactions by only dealing with leading , creditworthy financial institutions and does not anticipate nonperformance . in addition , the contracts are distributed among several financial institutions , all of whom presently have investment grade credit ratings , thus minimizing credit risk concentration . stockholders 2019 equity derivative instruments activity , net of tax , included in non-owner changes to equity within the consolidated statements of stockholders 2019 equity for the years ended december 31 , 2007 and 2006 is as follows: .

2007: balance at january 1: 16
increase ( decrease ) in fair value: -6
reclassifications to earnings: -10
balance at december 31: 2014
2006: balance at january 1: 2
increase ( decrease ) in fair value: 75
reclassifications to earnings: -61
balance at december 31: 16
2005: balance at january 1: -272
increase ( decrease ) in fair value: 28
reclassifications to earnings: 246
balance at december 31: 2

net investment in foreign operations hedge at december 31 , 2007 and 2006 , the company did not have any hedges of foreign currency exposure of net investments in foreign operations . investments hedge during the first quarter of 2006 , the company entered into a zero-cost collar derivative ( the 201csprint nextel derivative 201d ) to protect itself economically against price fluctuations in its 37.6 million shares of sprint nextel corporation ( 201csprint nextel 201d ) non-voting common stock . during the second quarter of 2006 , as a result of sprint nextel 2019s spin-off of embarq corporation through a dividend to sprint nextel shareholders , the company received approximately 1.9 million shares of embarq corporation . the floor and ceiling prices of the sprint nextel derivative were adjusted accordingly . the sprint nextel derivative was not designated as a hedge under the provisions of sfas no . 133 , 201caccounting for derivative instruments and hedging activities . 201d accordingly , to reflect the change in fair value of the sprint nextel derivative , the company recorded a net gain of $ 99 million for the year ended december 31 , 2006 , included in other income ( expense ) in the company 2019s consolidated statements of operations . in december 2006 , the sprint nextel derivative was terminated and settled in cash and the 37.6 million shares of sprint nextel were converted to common shares and sold . the company received aggregate cash proceeds of approximately $ 820 million from the settlement of the sprint nextel derivative and the subsequent sale of the 37.6 million sprint nextel shares . the company recognized a loss of $ 126 million in connection with the sale of the remaining shares of sprint nextel common stock . as described above , the company recorded a net gain of $ 99 million in connection with the sprint nextel derivative . prior to the merger of sprint corporation ( 201csprint 201d ) and nextel communications , inc . ( 201cnextel 201d ) , the company had entered into variable share forward purchase agreements ( the 201cvariable forwards 201d ) to hedge its nextel common stock . the company did not designate the variable forwards as a hedge of the sprint nextel shares received as a result of the merger . accordingly , the company recorded $ 51 million of gains for the year ended december 31 , 2005 reflecting the change in value of the variable forwards . the variable forwards were settled during the fourth quarter of 2005 . fair value of financial instruments the company 2019s financial instruments include cash equivalents , sigma fund investments , short-term investments , accounts receivable , long-term finance receivables , accounts payable , accrued liabilities , derivatives and other financing commitments . the company 2019s sigma fund and investment portfolios and derivatives are recorded in the company 2019s consolidated balance sheets at fair value . all other financial instruments , with the exception of long-term debt , are carried at cost , which is not materially different than the instruments 2019 fair values. .

Questions:
what was the stockholders 2019 equity derivative as of december 2006?
and what was it in january of that same year?
what was, then, the change over the year?
what was the stockholders 2019 equity derivative as of january 2006?
and how much does this change represent in relation to this january equity derivative, in percentage?

Answers:
16
2
14
2
700%