Percent Change Calculator
Tools
Calculate percent change of two values.
Users
271
Rating
5.0
Reviews
3
7D Growth
-19|-6.55%
Stable signalFree or hybridLow-risk permissions
Percentage Calculator
Perform basic percentage calculations easily.
Users2KCurrent public install base
Rating4.8Store average score
Reviews13Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
2 assetsPercentage Calculator Media preview
Trend
User growth trend
Review user movement across collected snapshots.
User Growth Over Time
Rating trend
7-day rating trend
View collected rating snapshots from the latest 7-day window to assess rating stability.
7-day rating change
Start
4.77
Latest
4.77
7-day rating change
0.00
2026年7月16日2026年7月22日
Growth overview
Daily, weekly, and monthly growth
Compare 1-day, 7-day, and 30-day net growth and growth rate.
1-day growthFlat
00%7-day growthFlat
00%30-day growthFlat
00%Technical snapshot
Version, languages, and crawl freshness
Review publication date, version, supported languages, and crawl timestamps.
Version1.0.2
ManifestV3
Size20.31KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
Review the store description, core capabilities, and common use cases.
Users can perform the following percentage calculations:
- What is X% of Y
- X is what % of Y
- % increase/decrease from X to Y
- X + Y%
- X - Y%
Reviews
Recent review snapshot
Inspect the latest comments and rating distribution.
Store average score4.8Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.7Average computed only from synced review bodies below
Reviews with text9Synced review bodies
Total ratings / reviews13Chrome Web Store public rating/review count
Store average score: 4.8. 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.
Related products
Similar and related extensions
Review related products from the Chrome Web Store detail page.
Percentage Calculator
Tools
A simple percentage calculator
Users
91
Rating
--
Reviews
0
7D Growth
-5|-5.21%
Free, Easy Percentage Calculator
Tools
Calculate percentages quickly and easily with our free percentage calculator!
Users
179
Rating
--
Reviews
0
7D Growth
--|--
Percentage Calculator
Developer Tools
Calculate proportions for responsive projects.
Users
104
Rating
4.0
Reviews
3
7D Growth
+3|2.97%
Discount Calculator
Workflow & Planning
Likely PaidConfidence 88Platform PayPal
A basic caculator that also allows you to calculate common price discounts and tips with a single click.
Users
2K
Rating
4.4
Reviews
8
7D Growth
0|0%
Percentage Change Calculator
Workflow & Planning
Calculate percentage change between two values
Users
645
Rating
5.0
Reviews
3
7D Growth
+5|0.78%
I love this extension, I use it all the time. It seems there was a new update that took away auto-evaluation though. I used to be able to plug numbers in and it would give the result automatically, but now I have to click 'evaluate' each time. It would be nice for the auto-evaluate to be brought back!
This little app is so good. I'd pay for it! For the math challenged, can't imagine a better, easily used tool. Thanks to the developer for putting it out there. I hope it sticks around for a long time
Very handy. Thanks for creating this. All functionality works except the last one. Please fix if possible. X - Y% = Z (eg. 76 - 0.5% = Doesn't give correct result)
Very handy thank you friend :)
no nonsense does what it says
Useful. Simple. Easy to use. Just the right app for me.
I Just Love This App, I Have Several Credit Cards, And I Could Never Get My Credit Utilization Down Right! With This App! I Get My Credit Card Utilization Down Perfectly! One Awesome App!
X - Y% = Z (eg. $176 - 20% = $???) is very useful function. It's much faster than having to ask Google step by step.
Nice extension, though 3 improvements would make it a perfect one: 1) more precision, 2) automatic calculation right after entering the numbers and 3) dots or comma option. Thanks for the extension!