more_accurate_wanikani_progress.js

function getPercentageFromA(a) { return parseInt(($(a.getAttribute('data-content')).find('div')[0].innerHTML).split('%')[0]); }

function getAveragePercentage() {
	var total = 0;
	var count = 0;

	for (var a of $('.lattice-single-character ul li a')) {
		var percentage = getPercentageFromA(a);
	 	if (!isNaN(percentage)) {
        	total += percentage;
			count++;
        }
	}

	return total / count;
}

getAveragePercentage();