B
Evidence Grade B
Graded
under review
Safe to Cite
Current
15%
15% -- revenue loss percentage for restaurants (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
15%
Unit
Percentage
Data Vintage
2026
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
60
Freshness
95
Source
Jelle De Vries (ScienceDirect)
Primary
Tier C
https://kliknroll.com/handle-customer-complaints-in-a-restaurant/ ↗
Source Article
How to Handle Customer Complaints in a Restaurant (2026)
Key Takeaways of this Article
Handling customer complaints effectively in a restaurant is one of the foundations of a successful and long-lasting restaurant.
The team here at KlikNRoll has got more than a decade of experience and knowledge at this point, so we feel like we can point you in the right…
Original Research
Jelle De Vries (ScienceDirect)
· Original study ↗
Methodology
Cites a study by Jelle De Vries published on ScienceDirect; secondary citation
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
restaurants: 15% revenue loss percentage. Source: Jelle De Vries (ScienceDirect) (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/restaurant-revenue-loss-wait-times
HTML Embed
<blockquote cite="https://lighthousedata.io/data/restaurant-revenue-loss-wait-times" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>15%</strong> -- revenue loss percentage for restaurants<br><small>Source: Jelle De Vries (ScienceDirect) (2026) · <a href="https://lighthousedata.io/data/restaurant-revenue-loss-wait-times" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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