3100% is the change from 14 to 448
Calculation steps:
[( 448 - 14 ) ÷ 14] x 100 = 3100%
Formula
Percentage change = [(448 - 14) / 14] x 100
Subtract the new number by the original number
448 - 14 = 434
434 ÷ 14 = 31
31 x 100 = 3100%
Example