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.


is&gs 2019 operating profit decreased $ 60 million , or 8% ( 8 % ) , for 2014 compared to 2013 . the decrease was primarily attributable to the activities mentioned above for sales , lower risk retirements and reserves recorded on an international program , partially offset by severance recoveries related to the restructuring announced in november 2013 of approximately $ 20 million for 2014 . adjustments not related to volume , including net profit booking rate adjustments , were approximately $ 30 million lower for 2014 compared to 2013 . 2013 compared to 2012 is&gs 2019 net sales decreased $ 479 million , or 5% ( 5 % ) , for 2013 compared to 2012 . the decrease was attributable to lower net sales of about $ 495 million due to decreased volume on various programs ( command and control programs for classified customers , ngi and eram programs ) ; and approximately $ 320 million due to the completion of certain programs ( such as total information processing support services , the transportation worker identification credential and the outsourcing desktop initiative for nasa ) . the decrease was partially offset by higher net sales of about $ 340 million due to the start-up of certain programs ( such as the disa gsm-o and the national science foundation antarctic support ) . is&gs 2019 operating profit decreased $ 49 million , or 6% ( 6 % ) , for 2013 compared to 2012 . the decrease was primarily attributable to lower operating profit of about $ 55 million due to certain programs nearing the end of their life cycles , partially offset by higher operating profit of approximately $ 15 million due to the start-up of certain programs . adjustments not related to volume , including net profit booking rate adjustments and other matters , were comparable for 2013 compared to 2012 . backlog backlog increased in 2014 compared to 2013 primarily due to several multi-year international awards and various u.s . multi-year extensions . this increase was partially offset by declining activities on various direct warfighter support and command and control programs impacted by defense budget reductions . backlog decreased in 2013 compared to 2012 primarily due to lower orders on several programs ( such as eram and ngi ) , higher sales on certain programs ( the national science foundation antarctic support and the disa gsm-o ) and declining activities on several smaller programs primarily due to the continued downturn in federal information technology budgets . trends we expect is&gs 2019 net sales to decline in 2015 in the low to mid single digit percentage range as compared to 2014 , primarily driven by the continued downturn in federal information technology budgets , an increasingly competitive environment , including the disaggregation of existing contracts , and new contract award delays , partially offset by increased sales resulting from acquisitions that occurred during the year . operating profit is expected to decline in the low double digit percentage range in 2015 primarily driven by volume and an increase in intangible amortization from 2014 acquisition activity , resulting in 2015 margins that are lower than 2014 results . missiles and fire control our mfc business segment provides air and missile defense systems ; tactical missiles and air-to-ground precision strike weapon systems ; logistics and other technical services ; fire control systems ; mission operations support , readiness , engineering support and integration services ; and manned and unmanned ground vehicles . mfc 2019s major programs include pac-3 , thaad , multiple launch rocket system , hellfire , jassm , javelin , apache , sniper ae , low altitude navigation and targeting infrared for night ( lantirn ae ) and sof clss . mfc 2019s operating results included the following ( in millions ) : . <table class='wikitable'><tr><td>1</td><td>-</td><td>2014</td><td>2013</td><td>2012</td></tr><tr><td>2</td><td>net sales</td><td>$ 7680</td><td>$ 7757</td><td>$ 7457</td></tr><tr><td>3</td><td>operating profit</td><td>1358</td><td>1431</td><td>1256</td></tr><tr><td>4</td><td>operating margins</td><td>17.7% ( 17.7 % )</td><td>18.4% ( 18.4 % )</td><td>16.8% ( 16.8 % )</td></tr><tr><td>5</td><td>backlog at year-end</td><td>$ 13600</td><td>$ 15000</td><td>$ 14700</td></tr></table> 2014 compared to 2013 mfc 2019s net sales for 2014 decreased $ 77 million , or 1% ( 1 % ) , compared to 2013 . the decrease was primarily attributable to lower net sales of approximately $ 385 million for technical services programs due to decreased volume reflecting market pressures ; and about $ 115 million for tactical missile programs due to fewer deliveries ( primarily high mobility artillery .
Question: what was the operating profit in 2013, in millions?
Answer: 1431.0
Question: and what was it in 2012, also in millions?
Answer: 1256.0
Question: what was, then, the change in operating profit over the year, in millions?
Answer: 175.0
Question: and how much does that change represent in relation to the 2012 operating profit?

0.13933