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: visa inc . notes to consolidated financial statements 2014 ( continued ) september 30 , 2008 ( in millions , except as noted ) were converted on a one-to-one basis from class eu ( series i , ii , iii ) common stock to class c ( series iii , ii , and iv ) common stock concurrent with the true-up . the results of the true-up are reflected in the table below . fractional shares resulting from the conversion of the shares of each individual stockholder have been rounded down . these fractional shares were paid in cash to stockholders as part of the initial redemption of class b common stock and class c common stock shortly following the ipo . outstanding regional classes and series of common stock issued in the reorganization converted classes and series of common stock issued in the true-up number of regional classes and series of common stock issued in the reorganization true-up conversion number of converted classes and series of common stock after the true-up class usa ( 1 ) class b ( 2 ) 426390481 0.93870 400251872 . <table class='wikitable'><tr><td>1</td><td>outstanding regional classes and seriesof common stock issued inthe reorganization</td><td>converted classes and series of common stock issued in the true-up</td><td>number of regional classes and series of common stock issued in the reorganization</td><td>true-up conversion ratio</td><td>number of converted classes and series of common stock after the true-up</td></tr><tr><td>2</td><td>class usa ( 1 )</td><td>class b ( 2 )</td><td>426390481</td><td>0.93870</td><td>400251872</td></tr><tr><td>3</td><td>class eu ( series i )</td><td>class c ( series iii )</td><td>62213201</td><td>1.00000</td><td>62213201</td></tr><tr><td>4</td><td>class eu ( series ii )</td><td>class c ( series ii )</td><td>27904464</td><td>1.00000</td><td>27904464</td></tr><tr><td>5</td><td>class eu ( series iii )</td><td>class c ( series iv )</td><td>549587</td><td>1.00000</td><td>549587</td></tr><tr><td>6</td><td>class canada</td><td>class c ( series i )</td><td>22034685</td><td>0.98007</td><td>21595528</td></tr><tr><td>7</td><td>class ap</td><td>class c ( series i )</td><td>119100481</td><td>1.19043</td><td>141780635</td></tr><tr><td>8</td><td>class lac</td><td>class c ( series i )</td><td>80137915</td><td>1.07110</td><td>85835549</td></tr><tr><td>9</td><td>class cemea</td><td>class c ( series i )</td><td>36749698</td><td>0.95101</td><td>34949123</td></tr></table> ( 1 ) the amount of the class usa common stock outstanding prior to the true-up is net of 131592008 shares held by wholly-owned subsidiaries of the company . ( 2 ) the amount of the class b common stock outstanding subsequent to the true-up is net of 123525418 shares held by wholly-owned subsidiaries of the company . also , the company issued 51844393 additional shares of class c ( series ii ) common stock at a price of $ 44 per share in exchange for a subscription receivable from visa europe . this issuance and subscription receivable were recorded as offsetting entries in temporary equity on the company 2019s consolidated balance sheet at september 30 , 2008 . initial public offering in march 2008 , the company completed its ipo with the issuance of 446600000 shares of class a common stock at a net offering price of $ 42.77 ( the ipo price of $ 44.00 per share of class a common stock , less underwriting discounts and commissions of $ 1.23 per share ) . the company received net proceeds of $ 19.1 billion as a result of the ipo. .
Question: what was the amount gained with the issuance of the class a common stock in 2008?
Answer: 19101082000.0
Question: and as of september of that year, what was the difference in the number of shares of the class usa common stock pre and after true-up?

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