pre_text: Geographic and Other Information Revenue by geographic region, based on ship-to destinations, was as follows (in thousands): The United States represented 56%, 58% and 58% of revenue for 2019, 2018 and 2017, respectively. Revenue in the United Kingdom was $159.9 million in 2019 and $196.0 million in 2017, representing 11% of revenue in 2019 and 12% of revenue for 2017. Revenue in the United Kingdom was less than 10% of revenue in 2018. No other single country represented more than 10% of revenue during these periods. As of December 31, 2019 and 2018, long-lived assets, which represent property and equipment, located outside the United States were $27.9 million and $36.9 million, respectively.
table: December 31,
table: 2019 2018 2017
table: United States $799,016 $880,534 $944,052
table: Americas excluding United States 94,961 101,282 116,330
table: Europe, Middle East, and Africa 410,485 384,196 440,135
table: Asia Pacific 130,326 145,971 115,002
table: Total $1,434,788 $1,511,983 $1,615,519
question: Analyse this data from a financial earnings document. What is the difference in total revenue between 2017 and 2018?