Answer:
A reduction of 64.3 percent
Explanation:
Initial price of Brent crude oil=$140 per barrel
Final price of Brent crude oil=$50 per barrel
The percentage change in price=((Final price-Initial price)/(Initial price))×100
(50-140)/140=-0.6429×100=-64.29
Rounding off to tenth of a percent=10/100=0.1
-64.29=-64.3 since 64.29 is nearer to 64.3 than 64.2
-64.3 percent implies a reduction of 64.3 percent
There was a reduction of 64.3 percent