That&#x27;s % of desktop users (desktop use itself is declining rapidly - I don&#x27;t know anyone non-tech who uses a PC&#x2F;Laptop and most devs should be mobile&#x2F;tablet-first now). Also that was before the big &quot;please upgrade&quot; message Microsoft send out to everyone using IE8&#x2F;9&#x2F;10.<p>If it was purely about numbers, I&#x27;d attempt to support to Opera Mini and it&#x27;s 300 million users. But I don&#x27;t, and I&#x27;ve never met anyone who does, yet some people bring up IE10 support on a React-driven, Mobile-first web app to appease managers who have always wanted support for older versions of IE &quot;just because&quot;. Unless the clients are government&#x2F;big bank I can&#x27;t really see any justification for supporting them (and no one supports IE8 - even though it has double the usage IE10 has).