321.88% is the change from 128 to 540
Calculation steps:
[( 540 - 128 ) ÷ 128] x 100 = 321.88%
Formula
Percentage change = [(540 - 128) / 128] x 100
Subtract the new number by the original number
540 - 128 = 412
412 ÷ 128 = 3.21875
3.21875 x 100 = 321.88%