public function percent($value, $showSymbol = false, $spacer = ' ')
    {
        if (true === $showSymbol) {
            $formatted = $spacer.'%';
        } else {
            $formatted = '';
        }

        // Format given value
        return number_format(
            $value,
            $this->getConfiguration()->number->minor_unit,
            $this->getConfiguration()->number->decimal_point,
            $this->getConfiguration()->number->thousands_separator
        ).$formatted;
    }