EXHIBIT 99.2.4 SHARE ASSUMPTIONS USED IN CALCULATING EARNINGS PER SHARE NATIONAL DATA CORPORATION Restatement of Income for Discontinued Operations (In thousands) - ------------------------------------------------------------------------------------------------------------------------------------ Results Including Restructuring Charges FY 1999 FY 2000 ---------------------------------------- ------------------------------- Qtr1 Qtr 2 Qtr 3 Qtr 4 Total Qtr1 Qtr 2 Qtr 3 YTD ---------------------------------------- ------------------------------- Basic earnings before discontinued operations 33,723 33,681 33,728 33,766 33,725 33,876 33,376 32,920 33,392 ======================================== =============================== Discontinued operations 33,723 33,681 33,728 33,766 33,725 33,876 33,376 32,920 33,392 ---------------------------------------- ------------------------------- Basic earnings per share 33,723 33,681 33,728 33,766 33,725 33,876 33,376 32,920 33,392 ======================================== =============================== Diluted earnings before discontinued operations 35,039 34,808 38,038 37,900 37,823 38,017 33,376 36,562 34,402 ======================================== =============================== Discontinued operations 33,723 33,681 35,286 33,766 33,725 33,876 33,376 32,920 33,392 ---------------------------------------- ------------------------------- Diluted earnings per share 35,039 34,808 38,038 37,900 37,823 35,265 33,376 33,810 33,392 ======================================== =============================== Results Excluding Restructuring Charges FY 1999 FY 2000 ---------------------------------------- ----------------------- Qtr1 Qtr 2 Qtr 3 Qtr 4 Total Qtr1 Qtr 2 Qtr 3 ---------------------------------------- ----------------------- Basic earnings before discontinued operations 33,723 33,681 33,728 33,766 33,725 33,876 33,376 32,920 ======================================== ======================= Discontinued operations 33,723 33,681 33,728 33,766 33,725 33,876 33,376 32,920 ---------------------------------------- ----------------------- Basic earnings per share 33,723 33,681 33,728 33,766 33,725 33,876 33,376 32,920 ======================================== ======================= Diluted earnings before discontinued operations 35,039 34,808 38,038 37,900 37,823 38,017 34,128 36,562 ======================================== ======================= Discontinued operations 33,723 33,681 35,286 33,766 33,725 33,876 33,376 32,920 ---------------------------------------- ----------------------- Diluted earnings per share 35,039 34,808 38,038 37,900 37,823 35,265 34,128 33,810 ======================================== =======================