The package you pasted in the new document is slightly larger than the canvas, and you want to scale it down. There is a Scale tool that you can use, or you can simply drag one of the corner handles to make the image smaller. You can also precisely scale the image by a percentage.
The one thing to keep in mind is that this image is a bitmap, which means that you can make the image smaller, but you shouldn’t make it larger. The resolution of the image is 72 pixels per inch, and there are not enough pixels to increase the size. If you increase the size, the image quality suffers, and you will not be happy with the resulting image.