How to change number of products displayed on Shop Archive Page Woocommerce

functions.php

<?php
  //Change Number of Products Display on Shop Archive Page -- By Darshan Gada
  add_filter( 'loop_shop_per_page', 'new_loop_shop_per_page', 20 );

  function new_loop_shop_per_page( $cols ) {
    // $cols contains the current number of products per page based on the value stored on Options -> Reading
    // Return the number of products you wanna show per page.
    $cols = 100;
    return $cols;
  }
?>