vba - Estimating duplication percentage between rows in Excel -

i have excel (2010) data file on 200 variables (columns), , on 1,000 records (rows), each identified unique id number. however, i'm suspicious of these records fabricated, i.e., took existing record, replicated it, , changed few numbers make little different. therefore, need produce matrix show me number/percent of "same values" between each record , other records (e.g., record 1 , record 2 share 75 equal values, record 1 , record 3 share 57 equal values, record 2 , record 3 share 45 equal values, etc.). have few workarounds, take hours , don't produce simple matrix. don't care difference between values - whether equal or not. ideas appreciated!

don't know how perform on huge dataset but:

sub t()      dim d, m(), nr long, nc long, r long, r2 long, c long     dim v1, v2, long     d = sheet1.range("a1").currentregion.value     nr = ubound(d, 1)     nc = ubound(d, 2)     redim m(1 nr, 1 nr)      r = 1 nr         r2 = r nr             = 0             c = 1 nc                 v1 = d(r, c): if iserror(v1) v1 = "error!"                 v2 = d(r2, c): if iserror(v2) v2 = "error!"                 if v1 = v2 = + 1             next c             m(r2, r) =         next r2     next r      sheet2         .range("b2").resize(nr, nr).value = m         'assuming id's in first column...         r = 1 nr             .cells(1 + r, 1) = d(r, 1)             .cells(r, r + 1) = d(r, 1)         next r     end  end sub