Table:
0
A
B
C
D
E
1
For the Years
Ended December 31,
2
2019
2018(1)
3
Net revenues
4
Product sales
$1,975
30%
$2,255
30%
5
Subscription, licensing, and other revenues
4,514
70
5,245
70
6
Total net revenues
6,489
100
7,500
100
7
Costs and expenses
8
Cost of revenues—product sales:
9
Product costs
656
33
719
32
10
Software royalties, amortization, and intellectual property licenses
240
12
371
16
11
Cost of revenues—subscription, licensing, and other
12
Game operations and distribution costs
965
21
1,028
20
13
Software royalties, amortization, and intellectual property licenses
233
5
399
8
14
Product development
998
15
1,101
15
15
Sales and marketing
926
14
1,062
14
16
General and administrative
732
11
822
11
17
Restructuring and related costs
132
2
10
—
18
Total costs and expenses
4,882
75
5,512
73
19
Operating income
1,607
25
1,988
27
20
Interest and other expense (income), net
(26)
—
71
1
21
Loss on extinguishment of debt (2)
—
—
40
1
22
Income before income tax expense
1,633
25
1,877
25
23
Income tax expense
130
2
29
—
24
Net income
$1,503
23%
$1,848
25%

Questions and formulas:
Question: What is the percentage change in product costs between 2018 and 2019?
Formula: (B9-D9)/D9
Formula2: (B9-D9)/D9
Level: Calculation
Question: What is the percentage change in operating income between 2018 and 2019?
Formula: (B19-D19)/D19
Formula2: (B19-D19)/D19
Level: Calculation