250.78% is the change from 128 to 449
Calculation steps:
[( 449 - 128 ) ÷ 128] x 100 = 250.78%
Formula
Percentage change = [(449 - 128) / 128] x 100
Subtract the new number by the original number
449 - 128 = 321
321 ÷ 128 = 2.5078125
2.5078125 x 100 = 250.78%