300.78% is the change from 128 to 513
Calculation steps:
[( 513 - 128 ) ÷ 128] x 100 = 300.78%
Formula
Percentage change = [(513 - 128) / 128] x 100
Subtract the new number by the original number
513 - 128 = 385
385 ÷ 128 = 3.0078125
3.0078125 x 100 = 300.78%