[Images]Update speed-up-wordpress-and-improve-performance.mdx (#18130)

On average, using Lossy mode reduces file sizes by 48 percent.

src/content/docs/support/third-party-software/content-management-system-cms/speed-up-wordpress-and-improve-performance.mdx

@@ -25,7 +25,7 @@ WordPress/WooCommerce](https://support.cloudflare.com/hc/articles/236166048).
 
 Images can be incredibly costly to page load times; fortunately, Cloudflare can dramatically help improve image load times. You can find these features in the Cloudflare dashboard by going to **Speed** > **Optimization** > **Image Optimization**.
 
-After enabling [**Polish**](/images/polish/), you can dramatically improve image and web page load times by compressing images and stripping metadata. Lossless will strip most metadata, e.g. EXIF data, but doesn't change the image detail. Lossy will strip most metadata and compresses images by approximately 15 percent.
+After enabling [**Polish**](/images/polish/), you can dramatically improve image and web page load times by compressing images and stripping metadata. Lossless will strip most metadata, e.g. EXIF data, but doesn't change the image detail. Lossy will strip most metadata and compresses images by approximately 48 percent.
 
 If you wish to optimise your site for mobile visitors, enabling [**Mirage**](/speed/optimization/images/mirage/) will allow images to be optimised and delivered based on the end-users network connection and device type: