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.

Text: third-party sales for this segment increased 4% ( 4 % ) in 2014 compared with 2013 , primarily due to higher volumes and the acquisition of firth rixson ( $ 81 2014see above ) . the higher volumes were mostly related to the aerospace ( commercial ) and commercial transportation end markets , somewhat offset by lower volumes in the industrial gas turbine end market . atoi for the engineered products and solutions segment increased $ 16 in 2015 compared with 2014 , principally the result of net productivity improvements across most businesses , a positive contribution from inorganic growth , and overall higher volumes in this segment 2019s organic businesses . these positive impacts were partially offset by unfavorable price/product mix , higher costs related to growth projects , and net unfavorable foreign currency movements , primarily related to a weaker euro . atoi for this segment climbed $ 10 in 2014 compared with 2013 , mainly due to net productivity improvements across all businesses and overall higher volumes , partially offset by higher costs , primarily labor , and unfavorable product in 2016 , demand in the commercial aerospace end market is expected to remain strong , driven by significant order backlog . also , third-party sales will include a positive impact due to a full year of sales related to the acquisitions of rti and tital . additionally , net productivity improvements are anticipated while pricing pressure across all markets is expected . transportation and construction solutions . <table class='wikitable'><tr><td>1</td><td>-</td><td>2015</td><td>2014</td><td>2013</td></tr><tr><td>2</td><td>third-party sales</td><td>$ 1882</td><td>$ 2021</td><td>$ 1951</td></tr><tr><td>3</td><td>atoi</td><td>$ 166</td><td>$ 180</td><td>$ 167</td></tr></table> this segment represents a portion of alcoa 2019s downstream operations and produces products that are used mostly in the nonresidential building and construction and commercial transportation end markets . such products include integrated aluminum structural systems , architectural extrusions , and forged aluminum commercial vehicle wheels , which are sold directly to customers and through distributors . a small part of this segment also produces aluminum products for the industrial products end market . generally , the sales and costs and expenses of this segment are transacted in the local currency of the respective operations , which are mostly the u.s . dollar , the euro , and the brazilian real . third-party sales for the transportation and construction solutions segment decreased 7% ( 7 % ) in 2015 compared with 2014 , primarily driven by unfavorable foreign currency movements , principally caused by a weaker euro and brazilian real , and lower volume related to the building and construction end market , somewhat offset by higher volume related to the commercial transportation end market . third-party sales for this segment increased 4% ( 4 % ) in 2014 compared with 2013 , mostly the result of higher volume related to the commercial transportation and building and construction end markets , somewhat offset by lower volume in the industrial products and market . atoi for the transportation and construction solutions segment declined $ 14 in 2015 compared with 2014 , mainly due to higher costs , net unfavorable foreign currency movements , primarily related to a weaker euro and brazilian real , and unfavorable price/product mix . these negative impacts were mostly offset by net productivity improvements across all businesses . atoi for this segment improved $ 13 in 2014 compared with 2013 , principally attributable to net productivity improvements across all businesses and overall higher volumes , partially offset by unfavorable product mix and higher costs , primarily labor . in 2016 , the non-residential building and construction end market is expected to improve through growth in north america but will be slightly offset by overall weakness in europe . also , north america build rates in the commercial .
Question: what was the contribution of the acquisition of firth rixson in the third-party sales in 2014?
Answer: 81.0
Question: and what was the total of those sales?
Answer: 2021.0
Question: how much, then, in percentage, did that contribution represent in relation to this total?
Answer: 0.04008
Question: and from 2013 to that year, what was the change in the total of net productivity and overall higher volumes concerning the atoi as a portion of that total in 2013?
Answer: 0.07784
Question: how much is that in percentage?

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