Summarised cash flow statement Cash flow We generated a net cash inflow from operating activities of £4,256m, down £671m, mainly driven by £2bn contributions to the BT Pension Scheme, offset by favourable working capital movements. In line with our outlook, normalised free cash flowb was £2,440m, down £533m or 18%, driven by increased cash capital expenditure, decrease in EBITDA and higher tax payments. Free cash flow, which includes specific item outflows of £598m (2017/18: £828m) and a £273m (2017/18: £109m) tax benefit from pension deficit payments, was £619m (2017/18: £1,586m). Last year also included payments of £325m for the acquisition of mobile spectrum. The spectrum auction bidding took place across the 2017/18 and 2018/19 financial years. Whilst £325m was on deposit with Ofcom at 31 March 2018, we went on to acquire spectrum for a total price of £304m and the excess deposit balance has since been refunded. We made pension deficit payments of £2,024m (2017/18: £872m) and paid dividends to our shareholders of £1,504m (2017/18: £1,523m). The net cash cost of specific items of £598m (2017/18: £828m) includes restructuring payments of £372m (2017/18: £189m) and regulatory payments of £170m (2017/18: £267m). Last year also included payments of £225m relating to the settlement of warranty claims under the 2015 EE acquisition agreement. b After net interest paid, before pension deficit payments (including the cash tax benefit of pension deficit payments) and specific items. <table> <tbody> <tr><td></td><td>2019</td><td>2018</td><td>2017</td></tr> <tr><td>Year ended 31 March</td><td>£m</td><td>£m</td><td>£m</td></tr> <tr><td>Cash generated from operations</td><td>4,687</td><td>5,400</td><td>6,725</td></tr> <tr><td>Tax paid</td><td>(431)</td><td>(473)</td><td>(551)</td></tr> <tr><td>Net cash inflows from operating activities</td><td>4,256</td><td>4,927</td><td>6,174</td></tr> <tr><td>Net purchase of property, plant and equipment and software</td><td>(3,637)</td><td>(3,341)</td><td>(3,119)</td></tr> <tr><td>Free cash flow</td><td>619</td><td>1,586</td><td>3,055</td></tr> <tr><td>Interest received</td><td>23</td><td>7</td><td>7</td></tr> <tr><td>Interest paid</td><td>(531)</td><td>(555)</td><td>(629)</td></tr> <tr><td>Add back pension deficit payments</td><td>2,024</td><td>872</td><td>274</td></tr> <tr><td>Add back net cash flow from specific items</td><td>598</td><td>828</td><td>205</td></tr> <tr><td>Add back net sale of non-current asset investments</td><td>1</td><td>19</td><td>(20)</td></tr> <tr><td>Add back prepayments in respect of acquisition of spectrum licence</td><td>-</td><td>325</td><td>-</td></tr> <tr><td>Remove refund on acquisition of spectrum licence</td><td>(21)</td><td>-</td><td>-</td></tr> <tr><td>Remove cash tax benefit of pension deficit payments</td><td>(273)</td><td>(109)</td><td>(110)</td></tr> <tr><td>Normalised free cash flow b</td><td>2,440</td><td>2,973</td><td>2,782</td></tr> </tbody> </table>

Question: If Cash generated from operations in 2019 was 6,000 million, what would be the change in Cash generated from operations from 2018 to 2019?
Answer: 600

Question: If tax paid in 2019 was -500 million, what would be the average tax paid for 2017-2019?
Answer: -508

Question: If Net cash inflows from operating activities in 2019 was 5,000 million, what would be the change  in the Net cash inflows from operating activities from 2018 to 2019?
Answer: 73