(In thousands, except per share amounts)
2019
2018
2017
Net income (loss)
$(19,931)
$(50,571)
$65,299
Less: net income attributable to noncontrolling interest
452
263
354
Income (loss) attributable to common shareholders before allocation of earnings to participating securities
(20,383)
(50,834)
64,945
Less: earnings allocated to participating securities
462
810
362
Net income (loss) attributable to common shareholders, after earnings allocated to participating securities
$(20,845)
$(51,644)
$64,583
Weighted-average number of common shares outstanding
70,837
70,613
60,373
Net income (loss) per common share attributable to common shareholders - basic and diluted
$ (0.29)
$ (0.73)
$ 1.07

text: 3. EARNINGS PER SHARE
text: Basic and diluted earnings (loss) per common share (“EPS”) are computed using the two-class method, which is an earnings allocation method that determines EPS for each class of common stock and participating securities considering dividends declared and participation rights in undistributed earnings. Certain of the Company’s restricted stock awards are considered participating securities because holders are entitled to receive non-forfeitable dividends, if declared, during the vesting term.
text: The potentially dilutive impact of the Company’s restricted stock awards is determined using the treasury stock method. Under the treasury stock method, if the average market price during the period exceeds the exercise price, these instruments are treated as if they had been exercised with the proceeds of exercise used to repurchase common stock at the average market price during the period. Any incremental difference between the assumed number of shares issued and repurchased is included in the diluted share computation.
text: Diluted EPS includes securities that could potentially dilute basic EPS during a reporting period. Dilutive securities are not included in the computation of loss per share when a company reports a net loss from continuing operations as the impact would be anti-dilutive.
text: The computation of basic and diluted EPS attributable to common shareholders computed using the two-class method is as follows:
text: Diluted EPS attributable to common shareholders for the years ended December 31, 2019, 2018 and 2017 excludes 1.1 million, 0.5 million and 0.3 million potential common shares, respectively, that could be issued under our share-based compensation plan, because the inclusion of the potential common shares would have an antidilutive effect.

Questions:
question: Which method is used for computing the basic and diluted earnings (loss) per common share?
answer: two-class method
question: What is the excluded potential common shares for 2019?
answer: 1.1 million
question: What is the excluded potential common shares for 2018?
answer: 0.5 million
question: What was the increase / (decrease) in the net income (loss) from 2018 to 2019?
answer: 30640
derivation: -19,931 -(- 50,571)
scale: thousand
question: What was the average net income attributable to noncontrolling interest for 2017-2019?
answer: 356.33
derivation: (452 + 263 + 354) / 3
scale: thousand
question: What is the percentage increase / (decrease) in the earnings allocated to participating securities from 2018 to 2019?
answer: -42.96
derivation: 462 / 810 - 1
scale: percent