A 50% increase followed by a 33.33% decrease

Overall, a 200% increase.

Step-by-step explanation:

Quantity after a 50% increase would be 1.50x, where x is the starting value.

if a 33.33% increase were to follow, then the final quantity would be

1.3333 (1.50x), or just barely under 2x (representing an increase of 200% in x).

Greater than the original value because it increases is more than the decrease