79.2% is the change from 250 to 448
Calculation steps:
[( 448 - 250 ) ÷ 250] x 100 = 79.2%
Formula
Percentage change = [(448 - 250) / 250] x 100
Subtract the new number by the original number
448 - 250 = 198
198 ÷ 250 = 0.792
0.792 x 100 = 79.2%
Example