Calculate Interview Success Rate: Finding Percentage from 500 Candidates and 424 Failures

To solve this problem, we'll follow these steps:

• Step 1: Calculate the number of candidates who passed.
• Step 2: Determine the percentage of candidates who passed.

Now, let's work through each step:
Step 1: First, we find the number of candidates who passed by subtracting the number who did not pass from the total number of evaluated candidates. This gives us:

Step 2: Next, we calculate the percentage of candidates who passed by dividing the number who passed by the total number of candidates and multiplying by 100:

Given the context of the problem, we round down to the nearest whole number for estimation, which results in $15\%$.

Therefore, the solution to the problem is $15\%$.