pre_text: Cash Flows The following table summarizes our cash flows for the years ended December 31, 2019, 2018 and 2017 (in thousands): At December 31, 2019, $6.7 million of the $539.7 million of cash, cash equivalents and restricted cash was held by foreign subsidiaries. Our intention is to indefinitely reinvest foreign earnings in our foreign subsidiaries. If these earnings were used to fund domestic operations, they would be subject to additional income taxes upon repatriation.
table: Year Ended December 31,
table: 2019 2018 2017
table: Cash, cash equivalents and restricted cash at beginning of period $60,068 $103,051 $60,765
table: Cash provided by operating activities 10,317 3,295 4,863
table: Cash used in investing activities (24,574) (48,413) (70,972)
table: Cash provided by financing activities 494,101 3,099 108,475
table: Effects of exchange rates on cash, cash equivalents and restricted cash (250) (964) (80)
table: Cash, cash equivalents and restricted cash at end of period $539,662 $60,068 $103,051
question: Analyse this data from a financial earnings document. What is the change in Cash used in investing activities from December 31, 2019 to December 31, 2018?