Years ended December 31,
2019 vs 2018
2018 vs 2017
2019
2018
2017
% Change
% Change
(in thousands, except percentages)
General and administrative
$ 178,934
$ 107,444
$ 67,719
66.5 %
58.7 %
Percentage of total revenues
11.3 %
10.0 %
10.1 %

text: General and Administrative
text: General and administrative expenses increased $71.5 million, or 66.5%, for the year ended December 31, 2019 compared to the same period in 2018, due to an increase of $28.7 million in employee-related costs ($12.2 million of which related to stock-based compensation and related payroll taxes), a $14.9 million increase in finance costs, which include an estimated net liability for non-recurring HST payable to the Government of Canada in the amount of $8.1 million related to 2019 and prior years, sales and use and other value added taxes, insurance, and bank fees, a $9.0 million increase in Shopify Payments losses driven by increased GMV processed through Shopify Payments, a $8.6 million increase in losses and insurance related to Shopify Capital driven by an expansion of our Capital offerings and programs, a $6.9 million increase in professional services fees for legal and tax services, including those related to our international expansion and the growth of our business, a $1.8 million increase in computer and software costs, and a $1.6 million increase in general bad debt expense. General and administrative expenses increased $71.5 million, or 66.5%, for the year ended December 31, 2019 compared to the same period in 2018, due to an increase of $28.7 million in employee-related costs ($12.2 million of which related to stock-based compensation and related payroll taxes), a $14.9 million increase in finance costs, which include an estimated net liability for non-recurring HST payable to the Government of Canada in the amount of $8.1 million related to 2019 and prior years, sales and use and other value added taxes, insurance, and bank fees, a $9.0 million increase in Shopify Payments losses driven by increased GMV processed through Shopify Payments, a $8.6 million increase in losses and insurance related to Shopify Capital driven by an expansion of our Capital offerings and programs, a $6.9 million increase in professional services fees for legal and tax services, including those related to our international expansion and the growth of our business, a $1.8 million increase in computer and software costs, and a $1.6 million increase in general bad debt expense.
text: General and administrative expenses increased $39.7 million, or 58.7%, for the year ended December 31, 2018 compared to the same period in 2017, due to an increase of $30.3 million in employee-related costs, a $4.5 million increase in professional services fees for legal and tax services, a $4.0 million increase in finance costs, which includes insurance, sales and use and other value added taxes, and a $1.7 million increase in computer and software costs.

Questions:
question: How much is the general and administrative expenses for the 3 financial years shown in the table (in chronological order)?
answer: $ 67,719
$ 107,444
$ 178,934
scale: thousand
question: What percentage of total revenues does general and administrative expenses make up for each of the 3 financial year ends (in chronological order)?
answer: 10.1 %
10.0 %
11.3 %
question: What is the general and administrative expenses for year ended 2019 ?
answer: $ 178,934
scale: thousand
question: What is the average general and administrative expenses for 2018 and 2019?
answer: 143189
derivation: (178,934+107,444)/2
scale: thousand
question: What is the average general and administrative expenses for 2017 and 2018?
answer: 87581.5
derivation: (107,444+67,719)/2
scale: thousand
question: What is the change in the average general administrative expenses between 2017-2018, and 2018-2019?
answer: 55607.5
derivation: [(178,934+107,444)/2] - [(107,444+67,719)/2]
scale: thousand