Final answer:
The percent change between the original number of 150 and the new number of 330 is 120%.
Step-by-step explanation:
The percent change between two numbers can be found using the following formula:
Percentage change = [(new value - old value)/old value] x 100%
In this case, the original number was 150 and the new number is 330. Substituting these values into the formula:
Percentage change = [(330 - 150)/150] x 100%
Percentage change = [180/150] x 100%
Percentage change = 1.2 x 100% = 120%