my $htc = HTML::Template::Compiled->new(
    filename => "test.html",
    use_expressions => 1,
    tagstyle => [qw/ +tt /],
    loop_context_vars => 1,
);
$htc->param(
    current  => \@AoHcurrent,
    previous => \@AoHprevious,
);

template:

NODE LINK VALUE
---------------------
[%loop current %]
[%= node %]  [%= link %]  [%= value %] ([%= expr=".previous[__index__]{'value'}" %])
[%/loop current %]