woocommerce_rate_percent │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_rate_percent', 'wp_kama_woocommerce_rate_percent_filter', 10, 2 );

/**
 * Function for `woocommerce_rate_percent` filter-hook.
 * 
 * @param  $rate_percent_value . '%' 
 * @param  $tax_rate_id              
 *
 * @return 
 */
function wp_kama_woocommerce_rate_percent_filter( $rate_percent_value . '%', $tax_rate_id ){

	// filter...
	return $rate_percent_value . '%';
}

$rate_percent_value . '%'

-

$tax_rate_id

-

Where the hook is called

return apply_filters( 'woocommerce_rate_percent', $rate_percent_value . '%', $tax_rate_id );

Where the hook is used in WooCommerce