for d, n in delta:
if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
-print("Total: Before=%d, After=%d, chg %f%%" % \
- (otot, ntot, (ntot - otot)*100/otot))
+print("Total: Before=%d, After=%d, chg %+.2f%%" % \
+ (otot, ntot, (ntot - otot)*100.0/otot))