To calculate the percent increase in airplane passenger capacity, we first need to find the difference between the current capacity (600 passengers) and the predicted future capacity (1400 passengers).
1400 - 600 = 800
Then divide this difference by the current capacity, and multiply by 100 to express the answer as a percentage.
(800/600) * 100 = 133.33
So the predicted percent increase in airplane passenger capacity is approximately 133%.
The nearest percent is 133%.