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 , 2008 , 2007 and 2006 is as follows: .

2008
2007
2006
Balance at January 1
$—
$16
$2
Increase (decrease) in fair value
(9)
(6)
75
Reclassifications to earnings
2
(10)
(61)
Balance at December 31
$(7)
$—
$16

net investment in foreign operations hedge at december 31 , 2008 and 2007 , 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 .
fair value of financial instruments the company 2019s financial instruments include cash equivalents , sigma fund investments , short-term investments , accounts receivable , long-term receivables , accounts payable , accrued liabilities , derivatives and other financing commitments .
the company 2019s sigma fund , available-for-sale 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 .
using quoted market prices and market interest rates , the company determined that the fair value of long- term debt at december 31 , 2008 was $ 2.8 billion , compared to a carrying value of $ 4.1 billion .
since considerable judgment is required in interpreting market information , the fair value of the long-term debt is not necessarily indicative of the amount which could be realized in a current market exchange .
equity price market risk at december 31 , 2008 , the company 2019s available-for-sale equity securities portfolio had an approximate fair market value of $ 128 million , which represented a cost basis of $ 125 million and a net unrealized loss of $ 3 million .
these equity securities are held for purposes other than trading .
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Question: Analyse this data from a financial earnings document. what was the percent change in balance of stockholder equity from the beginning to the end of 2006?
Choices:
7.0
0.9
-7
14
0.7
Correct choice index: 0