     browsers = new Browsers(data.browsers, ['chrome 30', 'firefox 20', 'ie 6'])
     prefixes = new Prefixes(data.prefixes, browsers)
 
+    coverage = browserslist.coverage(['chrome 30', 'firefox 20', 'ie 6'])
+    round    = Math.round(coverage * 100) / 100.0
+
     info(prefixes).should.eql "Browsers:\n" +
                               "  Chrome: 30\n" +
                               "  Firefox: 20\n" +
                               "  IE: 6\n" +
                               "\n" +
-                              "These browsers account for 0.09% " +
+                              "These browsers account for #{ round }% " +
                                 "of all users globally\n" +
                               "\n" +
                               "Properties:\n" +

Browsers = require('../lib/browsers')
Prefixes = require('../lib/prefixes')
info     = require('../lib/info')

data =
  browsers: require('caniuse-db/data.json').agents

      ['chrome 30', 'firefox 21', 'firefox 20', 'ie 6'])
    prefixes = new Prefixes(data.prefixes, browsers)

    coverage = browserslist.coverage(
      ['chrome 30', 'firefox 21', 'firefox 20', 'ie 6'])
    round = Math.round(coverage * 100) / 100.0

    info(prefixes).should.eql "Browsers:\n" +
                              "  Chrome: 30\n" +
                              "  Firefox: 21, 20\n" +
                              "  IE: 6\n" +
                              "\n" +
                              "These browsers account for #{round}% " +
                                "of all users globally\n" +
                              "\n" +
                              "At-Rules:\n" +
