public function render(array $changeCounts)
{
$this->templateVariableContainer->add('newCountRatio', $changeCounts['new'] / $changeCounts['total'] * 100);
$this->templateVariableContainer->add('changedCountRatio', $changeCounts['changed'] / $changeCounts['total'] * 100);
$this->templateVariableContainer->add('removedCountRatio', $changeCounts['removed'] / $changeCounts['total'] * 100);
$content = $this->renderChildren();
$this->templateVariableContainer->remove('newCountRatio');
$this->templateVariableContainer->remove('changedCountRatio');
$this->templateVariableContainer->remove('removedCountRatio');
return $content;
}