You can try using this code.its perfect working and already tested.
<?php
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
if ($paged == "1") {
$args = array(
'post_type' => 'post',
'post_status' => 'publish',
'offset' => 0,
'posts_per_page' => 5
);
} else {
$offset = $paged * 5;
$offset = $offset - 5;
$args = array(
'post_type' => 'post',
'post_status' => 'publish',
'offset' => $offset,
'posts_per_page' => 5
);
}
$loop = new WP_Query($args);
if ($loop->have_posts()) :
while ($loop->have_posts()) : $loop->the_post();
/*Your Code */
endwhile;
?>
<div class="pagination-grp">
<?php
$big = 999999999; // need an unlikely integer
//$i=1;
echo paginate_links(array(
'base' => str_replace($big, '%#%', esc_url(get_pagenum_link($big))),
'format' => '?paged=%#%',
'current' => max(1, get_query_var('paged')),
'prev_text' => __('<'),
'next_text' => __('>'),
'total' => $loop->max_num_pages
));
wp_reset_postdata();
endif;
?>
</div>