What do the percentages from the Test Explorer panel represent?

The percentages from the Test Explorer panel represent the passing percent of the test cases that are executed. The Test Explorer panel shows the status of each test case, the total number of test cases, the number of passed test cases, the number of failed test cases, and the passing percent. The passing percent is calculated by dividing the number of passed test cases by the total number of test cases and multiplying by 100. For example, if there are 10 test cases and 8 of them pass, the passing percent is 80%. References: Test Explorer