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;
    }