Answer:
For me the answer is
The ratio for the percent increase has a smaller denominator than the percent decrease.
Explanation:
From 45 to 75, the increase is 30
If we check the % increased, (30/45)*100 = 66.667%
If we decrease the price from 75 to 45, the amount is same, i.e. 30 but the denominator is changed.
(30/75)*100 = 40%