Table:
Year Ended December 31,

2019	2018	2017

Subscription revenue	$542,968	$473,052	$396,764

Percentage of subscription revenue to total revenue	94.2%	87.9%	82.3%

Professional services revenue	$33,555	$64,839	$85,221

Percentage of professional services to total revenue	5.8%	12.1%	17.7%

Total revenue	$576,523	537,891	481,985

Answer the following question considering both the table and the accompanying text, produce your answer and, if helpful, briefly explain your calculation. Conclude with JSON: {"answer": ["ANSWER"], "scale": "SCALE"} ("scale" = "" if no unit).

Text:
The following table sets forth our sources of revenue for each of the periods indicated (in thousands, except for percentages):
Subscription revenue increased by $69.9 million, or 15%, in 2019 when compared to 2018. Subscription revenue growth on a constant currency basis increased 16% in 2019 when compared to 2018. The increase was attributable to new business, which includes new customers, upsells, cross-sells, and renewals from existing customers.
Professional services revenue decreased by $31.3 million, or 48%, in 2019 when compared to 2018. The decrease of professional services revenue is attributable to the continued migration of implementation services to our global partners.
Subscription revenue increased by $76.3 million, or 19%, in 2018 when compared to 2017. The increase was attributable to new business, which included new customers, upsells, and renewals from existing customers. Professional services revenue decreased by $20.4 million, or 24%, in 2018 when compared to 2017. The decrease of professional services revenue is attributable to the execution of our strategic initiative to migrate much of our implementation services to our global partners.

Question: What is the change in Total Revenue between 2017 and 2018 as a percentage?

(($537,891-$481,985)/$481,985) * 100, therefore {"answer": "11.6", "scale": "percent"}