URGENT WILL GIVE BRAINLIEST IF CORRECT!!!!!!!!!!

Answer:
20% decrease
Step-by-step explanation:
Calculate Percent Decrease:
((Original - new) ÷ original) * 100
Substitute into formula
((2.5 - 2) ÷ 2.5) * 100
Simplify
(.5 ÷ 2.5) * 100
.2 * 100
20% decrease
Hope this helps :)