Answer:
The percentage which was taken off = 75%
Step-by-step explanation:
Using the formula
Percentage Decrease = [ (Initial Value - Final Value) / |Initial Value| ] × 100
= [(159.99 - 39.99) / (159.99)] × 100
= [120 / 159.99] × 100
= 0.75 × 100
= 75%
Therefore, the percentage which was taken off = 75%
