diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2396037e..96428dde 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## <small>3.1.1-stage.1 (2026-02-13)</small>
+
+* fix: simplify resize percentage calculations (#387) ([77c71c3](https://github.com/aziontech/lib/commit/77c71c3)), closes [#387](https://github.com/aziontech/lib/issues/387)
+
 ## 3.1.0 (2026-02-11)
 
 * Merge pull request #386 from aziontech/stage ([375d97b](https://github.com/aziontech/lib/commit/375d97b)), closes [#386](https://github.com/aziontech/lib/issues/386)
diff --git a/package.json b/package.json
index 967c0dc0..c62bac04 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "azion",
-  "version": "3.1.0",
+  "version": "3.1.1-stage.1",
   "description": "Azion Packages for Edge Computing.",
   "scripts": {
     "prepare": "husky",
diff --git a/packages/wasm-image-processor/src/index.ts b/packages/wasm-image-processor/src/index.ts
index 757c8880..f6df2ddc 100644
--- a/packages/wasm-image-processor/src/index.ts
+++ b/packages/wasm-image-processor/src/index.ts
@@ -10,11 +10,11 @@ function resize(image: photon.PhotonImage, width: number, height: number, usePer
   const imageWidth = image.get_width();
   const imageHeight = image.get_height();
 
-  const widthPercent = usePercent ? width : (width * 100.0) / imageWidth;
-  const heightPercent = usePercent ? height : (height * 100.0) / imageHeight;
+  const widthPercent = usePercent ? width : width / imageWidth;
+  const heightPercent = usePercent ? height : height / imageHeight;
 
-  const newWidth = (imageWidth * widthPercent) / 100;
-  const newHeight = (imageHeight * heightPercent) / 100;
+  const newWidth = imageWidth * widthPercent;
+  const newHeight = imageHeight * heightPercent;
 
   return photon.resize(image, newWidth, newHeight, 1);
 }