Yes at the end they will be converted to percentages
Suppose there are 4 participants in the bounty
Participant 1 : 10 stakes
Participant 2 : 25 stakes
Participant 3: 5 stakes
Participant 4 : 10 stakes
Total Stakes = 50
So each participant will be allotted the following percentages of the coins reserved for the bounty
Participant 1 : 10/50 * 100 = 20%
Participant 2 : 25/50 * 100 = 50%
Participant 3: 5/50 *100 = 10%
Participant 4 : 10/50 * 100 = 20%
I'll adding some of the example which already given by rudystyle.
Assume there are 10,000,000 token reserved for bounty, and it will counted by how much participant's stake.
Participant 1 will get : 20%*10,000,000 = 2,000,000 tokens
Participant 2 will get : 50%*10,000,000 = 5,000,000 tokens
Participant 3 will get : 10%*10,000,000 = 1,000,000 tokens
Participant 4 will get : 20%*10,000,000 = 2,000,000 tokens
Hope you can understand with this.
I'm not too dizzy with this, you just need to trust bounty manager, he is a professional and will not make mistakes in calculating.
There were some manager who have made mistake while calculating participants stake.