8.21% is the change from 414 to 448
Calculation steps:
[( 448 - 414 ) ÷ 414] x 100 = 8.21%
Formula
Percentage change = [(448 - 414) / 414] x 100
Subtract the new number by the original number
448 - 414 = 34
34 ÷ 414 = 0.0821256038647343
0.0821256038647343 x 100 = 8.21%