at december 31 , 2015 and 2014 , we had a modest working capital surplus .this reflects a strong cash position that provides enhanced liquidity in an uncertain economic environment .in addition , we believe we have adequate access to capital markets to meet any foreseeable cash requirements , and we have sufficient financial capacity to satisfy our current liabilities .cash flows . millions                                | 2015           | 2014           | 2013          
cash provided by operating activities   | $ 7344         | $ 7385         | $ 6823        
cash used in investing activities       | -4476 ( 4476 ) | -4249 ( 4249 ) | -3405 ( 3405 )
cash used in financing activities       | -3063 ( 3063 ) | -2982 ( 2982 ) | -3049 ( 3049 )
net change in cash and cash equivalents | $ -195 ( 195 ) | $ 154          | $ 369          operating activities cash provided by operating activities decreased in 2015 compared to 2014 due to lower net income and changes in working capital , partially offset by the timing of tax payments .federal tax law provided for 100% ( 100 % ) bonus depreciation for qualified investments made during 2011 and 50% ( 50 % ) bonus depreciation for qualified investments made during 2012-2013 .as a result , the company deferred a substantial portion of its 2011-2013 income tax expense , contributing to the positive operating cash flow in those years .congress extended 50% ( 50 % ) bonus depreciation for 2014 , but this extension occurred in december , and the related benefit was realized in 2015 , rather than 2014 .similarly , in december of 2015 , congress extended bonus depreciation through 2019 , which delayed the benefit of 2015 bonus depreciation into 2016 .bonus depreciation will be at a rate of 50% ( 50 % ) for 2015 , 2016 and 2017 , 40% ( 40 % ) for 2018 and 30% ( 30 % ) for 2019 .higher net income in 2014 increased cash provided by operating activities compared to 2013 , despite higher income tax payments .2014 income tax payments were higher than 2013 primarily due to higher income , but also because we paid taxes previously deferred by bonus depreciation .investing activities higher capital investments in locomotives and freight cars , including $ 327 million in early lease buyouts , which we exercised due to favorable economic terms and market conditions , drove the increase in cash used in investing activities in 2015 compared to 2014 .higher capital investments , including the early buyout of the long-term operating lease of our headquarters building for approximately $ 261 million , drove the increase in cash used in investing activities in 2014 compared to 2013 .significant investments also were made for new locomotives , freight cars and containers , and capacity and commercial facility projects .capital investments in 2014 also included $ 99 million for the early buyout of locomotives and freight cars under long-term operating leases , which we exercised due to favorable economic terms and market conditions. .
Question: what was the difference in cash provided by operating activities between 2013 and 2014?

Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.
at december 31 , 2015 and 2014 , we had a modest working capital surplus .this reflects a strong cash position that provides enhanced liquidity in an uncertain economic environment .in addition , we believe we have adequate access to capital markets to meet any foreseeable cash requirements , and we have sufficient financial capacity to satisfy our current liabilities .cash flows . millions                                | 2015           | 2014           | 2013          
cash provided by operating activities   | $ 7344         | $ 7385         | $ 6823        
cash used in investing activities       | -4476 ( 4476 ) | -4249 ( 4249 ) | -3405 ( 3405 )
cash used in financing activities       | -3063 ( 3063 ) | -2982 ( 2982 ) | -3049 ( 3049 )
net change in cash and cash equivalents | $ -195 ( 195 ) | $ 154          | $ 369          operating activities cash provided by operating activities decreased in 2015 compared to 2014 due to lower net income and changes in working capital , partially offset by the timing of tax payments .federal tax law provided for 100% ( 100 % ) bonus depreciation for qualified investments made during 2011 and 50% ( 50 % ) bonus depreciation for qualified investments made during 2012-2013 .as a result , the company deferred a substantial portion of its 2011-2013 income tax expense , contributing to the positive operating cash flow in those years .congress extended 50% ( 50 % ) bonus depreciation for 2014 , but this extension occurred in december , and the related benefit was realized in 2015 , rather than 2014 .similarly , in december of 2015 , congress extended bonus depreciation through 2019 , which delayed the benefit of 2015 bonus depreciation into 2016 .bonus depreciation will be at a rate of 50% ( 50 % ) for 2015 , 2016 and 2017 , 40% ( 40 % ) for 2018 and 30% ( 30 % ) for 2019 .higher net income in 2014 increased cash provided by operating activities compared to 2013 , despite higher income tax payments .2014 income tax payments were higher than 2013 primarily due to higher income , but also because we paid taxes previously deferred by bonus depreciation .investing activities higher capital investments in locomotives and freight cars , including $ 327 million in early lease buyouts , which we exercised due to favorable economic terms and market conditions , drove the increase in cash used in investing activities in 2015 compared to 2014 .higher capital investments , including the early buyout of the long-term operating lease of our headquarters building for approximately $ 261 million , drove the increase in cash used in investing activities in 2014 compared to 2013 .significant investments also were made for new locomotives , freight cars and containers , and capacity and commercial facility projects .capital investments in 2014 also included $ 99 million for the early buyout of locomotives and freight cars under long-term operating leases , which we exercised due to favorable economic terms and market conditions. .
Question: what was the difference in cash provided by operating activities between 2013 and 2014?
