did to find the difference in the operating cash flow between 2015 2016 and 2016 2017 and show percent and increase by or decrease by. I mainly confused how you turn the number you got as the difference into the percent. The numbers are in millions

(Round answers to 2 decimal places, e.g. 52.72.) PSG's net cash provided by operating activities Increased by 8.27 % from 2015 to 2016. PEG's net cash provided by operating activities decreased by % from 2016 to 2017. 26.82 Textbook and Media 2017 $ 7,102 2016 2015 $ 6,836 $ 8.548 10,604 3,078 7.144 3,134 Amoxints in millions: Years ended June 30 CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR OPERATING ACTIVITIES Net earnings Depreciation and amortization Loss on early extinguishment of debt Share based compensation expense Deferred income taxes Gain on sale of anset Venezuela deconsolidation charge Goodwill and intangible asset impairment charges Change in accounts receivable Change in inventories Change in accounts payable, accrued and other liabilities Change in other operating assets and liabilities Other TOTAL OPERATING ACTIVITIES INVESTING ACTIVITIES 15,411 2,820 543 351 (601) (5,490) 335 (815) (41) 337 (803) (766) 2,028 (322) 71 (149) (43) 168 12.753 450 35 116 1,285 204 184 15.435 349 313 928 (976) 746 14,608