Assume the following sales data for a company:

$2018.$

$$2,800,000$

$2017.$

$2,500,000$

$2016$

$2,100,000$

$2015$

$1,900,000$

What is the percentage increase in sales from $2017$ to $2018$:

$88\%$

$12\%$

$11\%$

$47\%$