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measurement point december 31 booking holdings nasdaq composite index s&p 500 rdg internet composite.
| Measurement PointDecember 31 | Booking Holdings Inc. | NASDAQComposite Index | S&P 500Index | RDG InternetComposite |
| --------- | --------- | --------- | --------- | --------- |
| 2013 | 100.00 | 100.00 | 100.00 | 100.00 |
| 2014 | 98.09 | 114.62 | 113.69 | 96.39 |
| 2015 | 109.68 | 122.81 | 115.26 | 133.20 |
| 2016 | 126.12 | 133.19 | 129.05 | 140.23 |
| 2017 | 149.50 | 172.11 | 157.22 | 202.15 |
| 2018 | 148.18 | 165.84 | 150.33 | 201.16 |
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Please answer the following questions with expressions if necessary.
what was the value of the nasdaq composite index in 2016?
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133.19
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and what was it in 2015?
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122.81
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what was, then, the change over the year?
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subtract(133.19, 122.81)
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and how much does this change represent in relation to the 2015 value, in percentage?
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subtract(133.19, 122.81), divide(#0, 122.81)