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Permissions and history

Is Percentage Change Calculator safe to install?

Percentage Change Calculator asks for 1 browser permission and declares no blanket site access. We do not audit code and we do not judge intent; what we can show is what the listing declares and whether that has changed while we have been watching.

Percentage Change Calculator

Chrome extension by Iulian Grecu · Productivity · Workflow

Open in the Chrome Web Store
What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

At a glance

Facts, not a score: an ad blocker needs every page and a theme needs nothing, so one number would be wrong about both. Each fact links to its detail.

Site access
No site access
Data collection
Declares it collects none
Audience
664 users · 5.0/5

What data it declares

The developer declares that it does not collect or use your data.

The developer also certifies that your data is not sold to third parties outside approved uses, not used for purposes unrelated to the extension's core function, and not used to decide creditworthiness or lending.

The listing does not link to a privacy policy.

This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

What Chrome asks you to allow

From the permissions it declares, Chrome shows no permission warning when you add it.

Derived from the manifest by Chrome's documented rules; the dialog's exact wording depends on your Chrome version and language. Chrome asks again if an update requests more.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

Routine for an extension

How usual this is for its category

In Productivity · Workflow, 19% of extensions ask for access to every site. This one: No site access.

The typical extension there declares 3 browser permissions; this one declares 1 browser permission.

Counted over the live extensions of the same category after our latest full pass of the store. A share is context, not a verdict: what is normal depends on what the extension is for.

Who uses it and how it is kept up

664 users

Users
+35 since 01.09
629-665 · 35 readings
  1. 2026-09-01629
  2. 2026-09-03641
  3. 2026-09-04639
  4. 2026-09-05636
  5. 2026-09-06638
  6. 2026-09-07640
  7. 2026-09-08634
  8. 2026-09-09638
  9. 2026-09-13654
  10. 2026-09-15648
  11. 2026-09-16650
  12. 2026-09-20645
  13. 2026-09-21643
  14. 2026-09-25642
  15. 2026-09-26645
  16. 2026-09-28639
  17. 2026-10-04634
  18. 2026-10-08653
  19. 2026-10-09636
  20. 2026-10-10635
  21. 2026-10-11629
  22. 2026-10-13632
  23. 2026-10-16638
  24. 2026-10-17640
  25. 2026-10-18629
  26. 2026-10-19643
  27. 2026-10-20647
  28. 2026-10-21650
  29. 2026-10-23655
  30. 2026-10-25640
  31. 2026-10-28655
  32. 2026-10-29656
  33. 2026-10-30654
  34. 2026-11-01665
  35. 2026-11-02664

What the store shows

Has it asked for more over time?

This is the question a permission list on its own cannot answer. An extension that shipped narrow and widened later is a different proposition from one that always asked for the same thing.

The permissions this extension requests have not changed since we started watching it.

Who publishes it

Iulian Grecu, who publishes 3 listings we track. This listing has been in the store since 2021-03-15 and was last updated on 2023-11-14.

Similar extensions that ask for less

Listings close to this one in what they say they do, which declare less reach. Less reach is not a verdict on either: compare what each needs for the job.

  1. Percentage Calculator No permissions at all · No permissions declared 20 users ★ 5.0
  2. Percentage Calculator No permissions at all · No permissions declared 106 users
  3. Quick Percentage Calculator No permissions at all · No permissions declared 156 users

How to check or remove it in Chrome

  1. Type chrome://extensions in the address bar and find the extension in the list.
  2. Open its details. The site access setting shows where it can run; set it to run only on click and it reaches a page only after you press its icon.
  3. To uninstall it, choose Remove on the same page.

Questions people ask

What can Percentage Change Calculator access?
No site access is declared in the manifest, so it cannot read the pages you open on its own. It declares 1 browser permission.
What data does Percentage Change Calculator collect?
The developer declares that it does not collect or use your data. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.
Has Percentage Change Calculator asked for more permissions over time?
The permissions this extension requests have not changed since we started watching it.
Does Percentage Change Calculator publish a privacy policy?
No, the store listing does not link to a privacy policy.

We read the public store listing up to 2 times a day and keep what it declared. We do not install the extension, do not audit its code, do not judge its intent and publish no contact details for its developer. Last read on 2026-11-02.

Back to Percentage Change Calculator · Alternatives to Percentage Change Calculator

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