human
Solve the following python programming problem given the following code:
def _print_report(stats, now = None) : 
    'Print final report.

    :param stats: a dictionary returned by :py:func:`_clusters_to_stats`
    :param now: the current UTC time, as a :py:class:`datetime.datetime`.
                Defaults to the current time.
    ' 
    if (now is None) : 
        now = datetime.utcnow () 
s = stats 
    if (not s ['clusters']) : 
        print ('No clusters created in the past two months!') 
        return 
print (('Total  # of Clusters: %d' % len (s ['clusters']))) 
    print () 
    print ('* All times are in UTC.') 
    print () 
    print (('Min create time: %s' % min ((cs ['created'] for cs in s ['clusters'])))) 
    print (('Max create time: %s' % max ((cs ['created'] for cs in s ['clusters'])))) 
    print (('   Current time: %s' % now.replace (microsecond = 0))) 
    print () 
    print ('* All usage is measured in Normalized Instance Hours, which are') 
    print ('  roughly equivalent to running an m1.medium instance for an hour.') 
    print ("  Billing is estimated, and may not match Amazon's system exactly.") 
    print () 
    def with_pct(usage) : 
        return (usage, _percent (usage, s ['nih_billed'])) 
print (('Total billed:  %9.2f  %5.1f%%' % with_pct (s ['nih_billed']))) 
    print (('  Total used:  %9.2f  %5.1f%%' % with_pct (s ['nih_used']))) 
    print (('    bootstrap: %9.2f  %5.1f%%' % with_pct (s ['bootstrap_nih_used']))) 
    print (('    jobs:      %9.2f  %5.1f%%' % with_pct (s ['job_nih_used']))) 
    print (('  Total waste: %9.2f  %5.1f%%' % with_pct (top_clusters ['nih_bbnu']))) 
    print (('    at end:    %9.2f  %5.1f%%' % with_pct (s ['end_nih_bbnu']))) 
    print (('    other:     %9.2f  %5.1f%%' % with_pct (s ['other_nih_bbnu']))) 
    print () 
    if s ['date_to_nih_billed'] : 
        print ('Daily statistics:') 
        print () 
        print (' date          billed      used     waste   % waste') 
        d = max (s ['date_to_nih_billed']) 
        while (d >= min (s ['date_to_nih_billed'])) : 
            print ((' %10s %9.2f...

    
    

    Fix the buggy line: print (('  Total waste: %9.2f  %5.1f%%' % with_pct (top_clusters ['nih_bbnu'])))
assistant
#Here is Python code to fix the buggy line: print (('  Total waste: %9.

print (('  Total waste: %9.2f  %5.1f%%' % with_pct (s ['nih_bbnu'])))