1, If it's 0%, it's 25%
2, If it's 25%, it's 50%
3, If it's 50%, it's 25%
4, if it's 25%, it's 50%
5, if it's 50%, it's 25%
...
After an odd number of these steps of reasoning, the answer is 25%, and after an even number of these steps of reasoning, the answer is 50%.
Since we have to follow this reasoning endlessly, the question of whether the answer is 50% or 25% is equivalent to whether or not infinity is even or odd, which is equivalent to if the value of the infinite sum 1 - 1 + 1 - 1 + 1 - 1 +... is 0 or 1, if the sum is equal to 0, 50% is true and 25% is false. if the sum is equal to 1, 25% is true and 50% is false. this infinite sum is divergent and has no value, meaning 50% and 25% are not given truth values, they are neither true nor false.