number_to_percentage (ActionView::Helpers::NumberHelper)

    # File lib/action_view/helpers/number_helper.rb, line 100
          def number_to_percentage(number, options = {})
            options   = options.stringify_keys
            precision = options["precision"] || 3
            separator = options["separator"] || "."

            begin
              number = number_with_precision(number, precision)
              parts = number.split('.')
              if parts.at(1).nil?
                parts[0] + "%"
              else
                parts[0] + separator + parts[1].to_s + "%"
              end
            rescue
              number
            end
          end