Table:
0
A
B
C
D
E
1
December 31,
2
(in thousands of $)
2018
2017
Change
% Change
3
Total operating revenues
127,625
—
127,625
100%
4
Vessel operating expenses
(26,317)
(2)
(26,315)
1,315,750%
5
Voyage expenses
(1,363)
(121)
(1,242)
1,026%
6
Administrative expenses
175
(1,736)
1,911
(110)%
7
Project development expenses
(16,526)
(2,506)
(14,020)
559%
8
Depreciation and amortization
(28,193)
—
(28,193)
100%
9
Other operating gains
2,749
15,100
(12,351)
(82)%
10
Operating income
58,150
10,735
47,415
442%
11
Equity in net losses of affiliates
(2,047)
(8,153)
6,106
(75)%

Questions and formulas:
Question: What was the change in total operating revenues between 2017 and 2018?
Formula: B3 - C3
Formula2: B3 - C3
Level: Calculation
Question: What was the percentage change in operating income between 2017 and 2018?
Formula: (B10 - C10)/C10
Formula2: (B10 - C10)/C10
Level: Calculation