Table:
0
A
B
C
D
1
For the Years Ended December 31,
2
2019
2018
2017
3
Numerator:
4
Consolidated net income
$1,503
$1,848
$273
5
Denominator:
6
Denominator for basic earnings per common share—weighted-average common shares outstanding
767
762
754
7
Effect of dilutive stock options and awards under the treasury stock method
4
9
12
8
Denominator for diluted earnings per common share—weighted-average common shares outstanding plus dilutive common shares under the treasury stock method
771
771
766
9
Basic earnings per common share
$1.96
$2.43
$0.36
10
Diluted earnings per common share
$1.95
$2.40
$0.36

Questions and formulas:
Question: What was the percentage change in basic earnings per common share between 2017 and 2018?
Formula: (C9-D9)/D9
Formula2: (C9-D9)/D9
Level: Calculation