diff --git a/lib/percentToFloat.js b/lib/percentToFloat.js
index b3431973..14bb5afd 100644
--- a/lib/percentToFloat.js
+++ b/lib/percentToFloat.js
@@ -1,4 +1,4 @@
-let percentReg = /^(-?\d+(?:\.\d+)?)(%?)$/;
+let percentReg = /^([+\-]?\d+(?:\.\d+)?(?:[eE][+\-]?\d+)?)(%?)$/;
 export default function (percent) {
     let matched = percent.match(percentReg);
     if (!matched) {