public function scale($percentage)
    {
        $this->validatePercentageValue($percentage);

        $this->toggleModified();

        $percentage = floatval($percentage);
        $width = $this->width() / 100 * $percentage;
        $height = $this->height() / 100 * $percentage;

        $this->getInterventionImage()->resize($width, $height);

        return $this;
    }