A searchable guide to the complete WordPress Icon Library (@wordpress/icons) package from Gutenberg.
import { Icon, percent } from '@wordpress/icons';
<Icon icon={percent} />
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" aria-hidden="true" focusable="false"><path fill-rule="evenodd" d="M6.5 8a1.5 1.5 0 103 0 1.5 1.5 0 00-3 0zM8 5a3 3 0 100 6 3 3 0 000-6zm6.5 11a1.5 1.5 0 103 0 1.5 1.5 0 00-3 0zm1.5-3a3 3 0 100 6 3 3 0 000-6zM5.47 17.41a.75.75 0 001.06 1.06L18.47 6.53a.75.75 0 10-1.06-1.06L5.47 17.41z" clip-rule="evenodd"></path></svg>
percent – WordPress Icon Library