A jar contains red, blue, and yellow candies. There are $14\%$ more yellow candies than blue candies, and $14\%$ fewer red candies than blue candies. Find the percent of candies in the jar that are yellow.
1. Let's denote the number of blue candies as \( b \).
2. According to the problem, there are \( 14\% \) more yellow candies than blue candies. Therefore, the number of yellow candies \( y \) can be expressed as:
   \[
   y = 1.14b
   \]
3. Similarly, there are \( 14\% \) fewer red candies than blue candies. Therefore, the number of red candies \( r \) can be expressed as:
   \[
   r = 0.86b
   \]
4. The total number of candies in the jar is the sum of red, blue, and yellow candies. Since we are looking for the percentage, we can assume the total number of candies is 1 (or 100%):
   \[
   r + b + y = 1
   \]
5. Substitute the expressions for \( r \) and \( y \) in terms of \( b \) into the total equation:
   \[
   0.86b + b + 1.14b = 1
   \]
6. Combine like terms:
   \[
   (0.86 + 1 + 1.14)b = 1
   \]
   \[
   3b = 1
   \]
7. Solve for \( b \):
   \[
   b = \frac{1}{3}
   \]
8. Now, substitute \( b \) back into the expression for \( y \):
   \[
   y = 1.14b = 1.14 \times \frac{1}{3} = \frac{1.14}{3} = 0.38
   \]
9. Therefore, the percentage of yellow candies in the jar is:
   \[
   y = 0.38 \times 100\% = 38\%
   \]

The final answer is \( \boxed{38\%} \).