code: function percentage(num) {
      const MAX_CHARACTERS = 4;
      const relativePercentage = Math.ceil(num * 100 / (100 / MAX_CHARACTERS));
  
      return `[${'▒'.repeat(relativePercentage)}${' '.repeat(MAX_CHARACTERS - relativePercentage)}]`;
  }
docs: Nice way to show percentage. Not really necessary.