Based on http://ludumdare.itch.io/:

93093 votes

Now if we split entries in 10 groups (sorted by votes):

29,16 %
14,86 %
12,01 %
10,32 %
8,917 %
7,875 %
6,805 %
5,349 %
3,153 %
1,445 %
0,088 %

Check that the top 5 block got 75% of all ld votes