Question: Regarding image size

[VincentVToscano]

Thanks for creating this plugin. I am using imagemin-cli and wanted to get your feedback regarding how to use the size option. I am attempting to use the desired file size over percent but am not seeing the final file size reduced to (in this case) 100 kb. Perhaps I am not using it correctly. While I am not getting errors in the console, I am also not seeing it reduced to the target size. Greatly appreciate your feedback when you have a moment.
Details of my setup:

"imagemin-cli": "^7.0.0",
"imagemin-jpegoptim": "^8.0.0",
"imagemin-pngquant": "^9.0.2",

I have this in my package.json. The find command fixes the issues whereby I keep my assets directory structure (they have a new feature that hasn 't been merged yet that addresses this). I have tried dropping the curly brackets as well.:

"_optimize-images": "find ./assets/src/ -type f | xargs -I % sh -c 'imagemin --plugin.jpegoptim.size={100} --plugin.pngquant.quality={0.1,0.2} % -o ../build/$(dirname %)'"

That resulting image is 3 kb less than the original: 161 kb. Thanks for your help in advance.