Out of 30 problems on the test jose got 4 wrong. What percentage did jose get correct?

My answer is 86%.

You take the number you got correct and divide by the number of questions on test.

26 divided by 30 = 0.86666667

Then take that number and multiply it by 100.

0.86666667 times 100 = 86.6666667.

So 86%.

Jose got 80% correct