A number is increased by 40% and then decreased by 30%. What is the net percentage change?
Show answer & explanation
Correct answer: B
Explanation
Given:
Increase = 40%
Decrease = 30%
By the formula:
Net percentage change = a − b − (ab / 100)
= 40 − 30 − (40 × 30 / 100) = −2
Decrease of 2%