percent_relative_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/main_content"
    style="@style/match">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview"
        style="@style/match"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        style="@style/block"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

    </android.support.design.widget.AppBarLayout>


    <android.support.percent.PercentRelativeLayout
        android:layout_marginTop="?attr/actionBarSize"
        android:clickable="true"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <View
            android:id="@+id/row_one_item_one"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_alignParentTop="true"
            android:background="#5182bb"
            app:layout_heightPercent="15%"
            app:layout_widthPercent="30%" />

        <View
            android:id="@+id/row_one_item_two"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_toRightOf="@+id/row_one_item_one"
            android:background="#396190"
            app:layout_heightPercent="15%"
            app:layout_widthPercent="30%" />

        <View
            android:id="@+id/row_one_item_three"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_toRightOf="@+id/row_one_item_two"
            android:background="#8fb5e1"
            app:layout_heightPercent="15%"
            app:layout_widthPercent="40%" />

        <View
            android:id="@+id/row_two_item_one"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_below="@+id/row_one_item_one"
            android:background="#d89695"
            app:layout_heightPercent="15%" />

        <View
            android:id="@+id/row_three_item_one"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_two_item_one"
            android:background="#f9c093"
            app:layout_heightPercent="20%"
            app:layout_widthPercent="40%" />

        <View
            android:id="@+id/row_three_item_two"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_two_item_one"
            android:layout_toRightOf="@+id/row_three_item_one"
            android:background="#948957"
            app:layout_heightPercent="10%"
            app:layout_widthPercent="60%" />

        <View
            android:id="@+id/row_four_item_one"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_three_item_one"
            android:background="#ccc2d9"
            app:layout_heightPercent="20%"
            app:layout_widthPercent="40%" />

        <View
            android:id="@+id/row_four_item_two"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_three_item_two"
            android:layout_toRightOf="@+id/row_four_item_one"
            android:background="#c3d59e"
            app:layout_heightPercent="25%"
            app:layout_widthPercent="60%" />

        <View
            android:id="@+id/row_five_item_one"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_four_item_one"
            android:background="#948957"
            app:layout_heightPercent="10%"
            app:layout_widthPercent="40%" />

        <View
            android:id="@+id/row_five_item_two"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_four_item_two"
            android:layout_toRightOf="@+id/row_five_item_one"
            android:background="#e6e0ec"
            app:layout_heightPercent="10%"
            app:layout_widthPercent="60%" />

        <View
            android:id="@+id/row_six_item_one"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_five_item_one"
            android:background="#f9c093"
            app:layout_heightPercent="20%"
            app:layout_widthPercent="20%" />

        <View
            android:id="@+id/row_six_item_two"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_five_item_one"
            android:layout_toRightOf="@+id/row_six_item_one"
            android:background="#588fd3"
            app:layout_heightPercent="20%"
            app:layout_widthPercent="20%" />

        <View
            android:id="@+id/row_six_item_three"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_below="@+id/row_five_item_two"
            android:layout_toRightOf="@+id/row_six_item_two"
            android:background="#a6a6a6"
            app:layout_heightPercent="25%"
            app:layout_widthPercent="60%" />

    </android.support.percent.PercentRelativeLayout>

</android.support.design.widget.CoordinatorLayout>