page 30 of 94 are included in capital spending amounts . another example is the company 2019s decision in 2007 to contribute an additional $ 44.5 million ( $ 27.3 million ) to its pension plans as part of its overall debt reduction plan . based on this , our consolidated free cash flow is summarized as follows: .

Table:
( $ in millions ) | 2007 | 2006 | 2005
cash flows from operating activities | $ 673.0 | $ 401.4 | $ 558.8
incremental pension funding net of tax | 27.3 | 2013 | 2013
capital spending | -308.5 ( 308.5 ) | -279.6 ( 279.6 ) | -291.7 ( 291.7 )
proceeds for replacement of fire-damaged assets | 48.6 | 61.3 | 2013
free cash flow | $ 440.4 | $ 183.1 | $ 267.1
based on information currently available , we estimate cash flows from operating activities for 2008 to be approximately $ 650 million , capital spending to be approximately $ 350 million and free cash flow to be in the $ 300 million range .
capital spending of $ 259.9 million ( net of $ 48.6 million in insurance recoveries ) in 2007 was below depreciation and amortization expense of $ 281 million .
we continue to invest capital in our best performing operations , including projects to increase custom can capabilities , improve beverage can and end making productivity and add more beverage can capacity in europe , as well as expenditures in the aerospace and technologies segment .
of the $ 350 million of planned capital spending for 2008 , approximately $ 180 million will be spent on top-line sales growth projects .
debt facilities and refinancing interest-bearing debt at december 31 , 2007 , decreased $ 93.1 million to $ 2358.6 million from $ 2451.7 million at december 31 , 2006 .
the 2007 debt decrease from 2006 was primarily attributed to debt payments offset by higher foreign exchange rates .
at december 31 , 2007 , $ 705 million was available under the company 2019s multi-currency revolving credit facilities .
the company also had $ 345 million of short-term uncommitted credit facilities available at the end of the year , of which $ 49.7 million was outstanding .
on october 13 , 2005 , ball refinanced its senior secured credit facilities and during the third and fourth quarters of 2005 , ball redeemed its 7.75% ( 7.75 % ) senior notes due august 2006 primarily through the drawdown of funds under the new credit facilities .
the refinancing and redemption resulted in a pretax debt refinancing charge of $ 19.3 million ( $ 12.3 million after tax ) to reflect the call premium associated with the senior notes and the write off of unamortized debt issuance costs .
the company has a receivables sales agreement that provides for the ongoing , revolving sale of a designated pool of trade accounts receivable of ball 2019s north american packaging operations , up to $ 250 million .
the agreement qualifies as off-balance sheet financing under the provisions of statement of financial accounting standards ( sfas ) no .
140 , as amended by sfas no .
156 .
net funds received from the sale of the accounts receivable totaled $ 170 million and $ 201.3 million at december 31 , 2007 and 2006 , respectively , and are reflected as a reduction of accounts receivable in the consolidated balance sheets .
the company was not in default of any loan agreement at december 31 , 2007 , and has met all payment obligations .
the u.s .
note agreements , bank credit agreement and industrial development revenue bond agreements contain certain restrictions relating to dividends , investments , financial ratios , guarantees and the incurrence of additional indebtedness .
additional details about the company 2019s receivables sales agreement and debt are available in notes 7 and 13 , respectively , accompanying the consolidated financial statements within item 8 of this report. .

Question: what is the percentage change in cash flow from operating activities from 2006 to 2007?
Answer: 67.7%
Calculation: subtract(673.0, 401.4), divide(#0, 401.4)