pre_text: The following table provides the company’s operating (non-GAAP) earnings for 2019 and 2018. See page 46 for additional information. * 2019 results were impacted by Red Hat purchase accounting and acquisition-related activity. ** Includes charges of $2.0 billion in 2018 associated with U.S. tax reform.
table: ($ in millions except per share amounts)
table: For the year ended December 31:* 2019 2018 Yr.-to-Yr. Percent Change
table: Net income as reported $ 9,431 8,728* 8.1%
table: Income/(loss) from discontinued operations, net of tax (4) 5 NM
table: Income from continuing operations $ 9,435 8,723* 8.2%
table: Non-operating adjustments (net of tax)
table: Acquisition-related charges 1,343 649 107.0
table: Non-operating retirement-related costs/(income) 512 1,248 (58.9)
table: U.S. tax reform charge 146 2,037 (92.8)
table: Operating (non-GAAP) earnings $11,436 $12,657 (9.6)%
table: Diluted operating (non-GAAP) earnings per share $ 12.81 $ 13.81 (7.2)%
question: Analyse this data from a financial earnings document. What was the increase / (decrease) in Net income from 2018 to 2019?