You need to change File > Settings > Builds,Execution,Deployment > Build Tools > Gradle >Gradle home path
On Mac OS, change the path in Android Studio > Preferences > Builds,Execution,Deployment > Build Tools > Gradle >Gradle home
Or set Use default gradle wrapper and edit Project\gradle\wrapper\gradle-wrapper.properties
files field distributionUrl
like this
distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip