Edit in JSFiddle

var percent = 55;
var answer;

function range1(percent) {
	console.log('Evaluate 1');
	return (percent > 66.66 && percent <= 100);
}

function range2(percent) {
	console.log('Evaluate 2');
	return (percent > 33.33 && percent <= 66.66);
}

function range3(percent) {
	console.log('Evaluate 3');
	return (percent > 0 && percent <= 33.33);
}

if (range1(percent)) {
	console.log('Match 1');
  answer = 'Answer 1';
} else if (range2(percent)) {
	console.log('Match 2');
  answer = 'Answer 2';
} else if (range3(percent)) {
	console.log('Match 3');
  answer = 'Answer 3';
}

console.log(answer)