Answer:
57%
Explanation:
the table shows the following:
test scores for Test 1 = 62, 62, 66, 70, 70, 70, 78, 82, 82, 86
test scores for Test 2 = 68, 72, 72, 72, 72, 76, 80, 80, 80, 84, 88, 88
there are 7 tests with scores greater than or equal to 70 on test 1
there are 11 tests with scores greater than or equal to 70 on test 2
the percent change is the difference of the two amounts, 7 and 11, divided by the original amount, 7
4/7 = 57%