Percentage Calculator | Basic
Tools
Quick and easy percentage calculations - find percentages, calculate changes, increases and decreases.
Users
61
Rating
5.0
Reviews
4
7D Growth
+2|3.77%
Signal pendingUnknownMedium-risk permissions
Percentage Calculator - Percent Change & Discounts
Percentage calculator with 6 modes: percent of a number, percent change, discounts, tips. Live results, history. Offline.
Users2Current public install base
Rating5.0Store average score
Reviews2Public review volume
Manifest versionV3Extension platform version
7-day growth--Net users gained this week
7-day growth rate--Relative weekly velocity
Preview
4 assetsPercentage Calculator - Percent Change & Discounts Media preview
Trend
User growth trend
Review user movement across collected snapshots.
User Growth Over Time
Rating trend
30-day rating change
Track rating movement over time to see whether quality signals remain stable.
30-day rating change
Start
5.00
Latest
5.00
30-day rating change
--
2026年7月11日2026年7月11日
Growth overview
Daily, weekly, and monthly growth
Compare 1-day, 7-day, and 30-day net growth and growth rate.
1-day growthNo data
----7-day growthNo data
----30-day growthNo data
----Technical snapshot
Version, languages, and crawl freshness
Review publication date, version, supported languages, and crawl timestamps.
Version1.0.1
ManifestV3
Size37.07KiB
Languages33Deutsch / English / Filipino +30
Published
Store updated
Last crawled
DeutschEnglishFilipinoIndonesiaMelayuNederlandsTiếng ViệtTürkçedanskespañolfrançaisitaliano
Overview
Product summary
Review the store description, core capabilities, and common use cases.
Percentage Calculator puts six everyday percent calculations one click away. Open the popup, pick a mode, type the numbers — the percentage calculator shows the answer live, while you type. No equals button, no page to load, no account. Everything runs locally, and the percentage calculator works offline.
SIX MODES IN ONE PERCENTAGE CALCULATOR
🔢 What is X% of Y — the classic percent of a number question
📊 X is what percent of Y — turn two numbers into a percent
📈 Change from A to B — labelled clearly as growth or drop
➕ Increase or decrease a value by X% — price rises, salary raises, fees
Reviews
Recent review snapshot
Inspect the latest comments and rating distribution.
Store average score5.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average5.0Average computed only from synced review bodies below
Reviews with text2Synced review bodies
Total ratings / reviews2Chrome Web Store public rating/review count
Store average score: 5.0. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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I like that it covers the different types of percentage questions — what is X% of Y, what percentage is X of Y, percentage increase/decrease. All the real-world cases I actually encounter.
I calculate percentages constantly — discounts, taxes, tips, budget splits. Doing it in my head or on a calculator app is fine but having this in the browser is just faster when I'm already working on something.