Financial report context:
management 2019s discussion and analysis of financial condition and results of operations 2013 ( continued ) ( amounts in millions , except per share amounts ) the effect of foreign exchange rate changes on cash and cash equivalents included in the consolidated statements of cash flows resulted in a decrease of $ 156.1 in 2015 . the decrease was primarily a result of the u.s . dollar being stronger than several foreign currencies , including the australian dollar , brazilian real , canadian dollar , euro and south african rand as of december 31 , 2015 compared to december 31 , 2014. .

Financial table:
balance sheet data: cash cash equivalents and marketable securities; december 31 , 2016: $ 1100.6; december 31 , 2015: $ 1509.7
balance sheet data: short-term borrowings; december 31 , 2016: $ 85.7; december 31 , 2015: $ 132.9
balance sheet data: current portion of long-term debt; december 31 , 2016: 323.9; december 31 , 2015: 1.9
balance sheet data: long-term debt; december 31 , 2016: 1280.7; december 31 , 2015: 1610.3
balance sheet data: total debt; december 31 , 2016: $ 1690.3; december 31 , 2015: $ 1745.1

Additional report context:
liquidity outlook we expect our cash flow from operations , cash and cash equivalents to be sufficient to meet our anticipated operating requirements at a minimum for the next twelve months . we also have a committed corporate credit facility as well as uncommitted facilities available to support our operating needs . we continue to maintain a disciplined approach to managing liquidity , with flexibility over significant uses of cash , including our capital expenditures , cash used for new acquisitions , our common stock repurchase program and our common stock dividends . from time to time , we evaluate market conditions and financing alternatives for opportunities to raise additional funds or otherwise improve our liquidity profile , enhance our financial flexibility and manage market risk . our ability to access the capital markets depends on a number of factors , which include those specific to us , such as our credit rating , and those related to the financial markets , such as the amount or terms of available credit . there can be no guarantee that we would be able to access new sources of liquidity on commercially reasonable terms , or at all . funding requirements our most significant funding requirements include our operations , non-cancelable operating lease obligations , capital expenditures , acquisitions , common stock dividends , taxes and debt service . additionally , we may be required to make payments to minority shareholders in certain subsidiaries if they exercise their options to sell us their equity interests . notable funding requirements include : 2022 debt service 2013 our 2.25% ( 2.25 % ) senior notes in aggregate principal amount of $ 300.0 mature on november 15 , 2017 , and a $ 22.6 note classified within our other notes payable is due on june 30 , 2017 . we expect to use available cash to fund the retirement of the outstanding notes upon maturity . the remainder of our debt is primarily long-term , with maturities scheduled through 2024 . see the table below for the maturity schedule of our long-term debt . 2022 acquisitions 2013 we paid cash of $ 52.1 , net of cash acquired of $ 13.6 , for acquisitions completed in 2016 . we also paid $ 0.5 in up-front payments and $ 59.3 in deferred payments for prior-year acquisitions as well as ownership increases in our consolidated subsidiaries . in addition to potential cash expenditures for new acquisitions , we expect to pay approximately $ 77.0 in 2017 related to prior-year acquisitions . we may also be required to pay approximately $ 31.0 in 2017 related to put options held by minority shareholders if exercised . we will continue to evaluate strategic opportunities to grow and continue to strengthen our market position , particularly in our digital and marketing services offerings , and to expand our presence in high-growth and key strategic world markets . 2022 dividends 2013 during 2016 , we paid four quarterly cash dividends of $ 0.15 per share on our common stock , which corresponded to aggregate dividend payments of $ 238.4 . on february 10 , 2017 , we announced that our board of directors ( the 201cboard 201d ) had declared a common stock cash dividend of $ 0.18 per share , payable on march 15 , 2017 to holders of record as of the close of business on march 1 , 2017 . assuming we pay a quarterly dividend of $ 0.18 per share and there is no significant change in the number of outstanding shares as of december 31 , 2016 , we would expect to pay approximately $ 280.0 over the next twelve months. .

Question: how much has cash equivalents and marketable securities decreased from 2014 to 2016?
Answer: 33.9%