What are the differences between saving an image as a JPEG with quality settings of 100 and 80?

When saving an image as a JPEG with quality settings of 100, the image will have higher quality and larger file size compared to saving it with quality settings of 80. The image saved at quality 100 will have more detail and less compression artifacts, while the image saved at quality 80 will have slightly lower quality and smaller file size due to more compression.