Donkey Kong 64 Wiki

These are the items that count toward the percentage on a file.

Number Single Percentage Total Percentage
Golden Banana 201 0.4% 80.4%
Battle Crown 10 0.5% 5%
Banana Fairy 20 0.2% 4%
Banana Medal 40 0.2% 8%
Boss Key 8 0.25% 2%
Nintendo Coin 1 0.5% 0.5%
Rareware Coin 1 0.5% 0.5%

With this spreadsheet you can keep track of your percentage.

Adventure Screen[]

132% aka max%

The values in the table above are based on the percent counter on the file selection screen. After performing the mathematics listed above, the game performs two checks:

  1. If the file has 201 golden bananas, 0.4 is subtracted from that calculated total. With a completed file, this would bring the percentage from 100.40% down to 100.00%
  2. If the file, after the deduction, has a file percentage of exactly 100.00%, and the file has obtained the Rareware Golden Banana, then it adds 1% back to the file

Game Percentage Code

The displayed number is an 8 bit signed integer, which means it covers all whole numbers from -128 to 127. If you get more than 127% by duplicating Golden Bananas, it will wrap down to -128 and continue counting up.

Secret Ending Cutscenes[]

Aside from End Sequence, there are two cutscenes at the end of the game. Whether or not you get to see them depends on the state of completion of your file, but is not related to the visible percent counter in any way. The "K. Lumsy" ending requires 280 percentage-altering collectables, which is equivalent to the amount in a 101% file minus one collectable. From the game percentage code indicating that the Rareware GB is critical in determining the file percentage, it is safe to assume the developers intended for this one collectable to be Rareware GB

Bonus Ending code

As for the "Bloopers" ending, this requires 281 percentage-altering collectables, which confirms that this is intended to be a 101% ending.