Small tool to calculate the difference between two numbers in percent. The result can optionally be multiplied with a 3rd value.
Make sure you have TypeScript 1.5 or higher installed and that tsc is available in your path.
Then run:
git clone https://github.com/hachre/percenter.git
cd percenter
./build.sh
This will generate percenter.js and percenter.js.map.
Afterwards open index.html in a browser.