B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
26%
26% -- card payment volume decline for Starbucks Korea (2025)
Card payment volumes at Starbucks Korea stores dropped by 26% within a week after the marketing controversy.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
26%
Unit
Percentage
Data Vintage
2025
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
martechtrend.com
Primary
Tier B
https://martechtrend.com/brand-reputation-management-starbucks/ ↗
Source Article
Starbucks Korea Boycott: Brand Reputation Management Lessons
Introduction: A Marketing Blunder Ignites Outrage
Brand reputation management became the central issue in South Korea after Starbucks Korea launched a marketing campaign that spiraled into a PR disaster. On 18 May, the company introduced its new “Tank” tumbler series with a promotion titled “Tank Da…
Original Research
martechtrend.com
· Original study ↗
Methodology
Reported payment volume decline following the 'Tank Day' boycott controversy
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Starbucks Korea: 26% card payment volume decline. Source: martechtrend.com (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/starbucks-korea-card-payment-drop-2025
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<blockquote cite="https://lighthousedata.io/data/starbucks-korea-card-payment-drop-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>26%</strong> -- card payment volume decline for Starbucks Korea<br><small>Source: martechtrend.com (2025) · <a href="https://lighthousedata.io/data/starbucks-korea-card-payment-drop-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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