version 3

def percent(bundled, not_bundled)
  #  convert input to floats
  bundled     = bundled.to_f
  not_bundled = not_bundled.to_f
  # verbose math
  bundled_not_bundled_sum = bundled + not_bundled
  # debugging
  puts bundled_not_bundled_sum
  # actual math
  percent_not_bundled = not_bundled / bundled_not_bundled_sum
  # limit to 2 points then get whole percent
  puts (percent_not_bundled.round(2) * 100).to_i
end