309.38% is the change from 128 to 524
Calculation steps:
[( 524 - 128 ) ÷ 128] x 100 = 309.38%
Formula
Percentage change = [(524 - 128) / 128] x 100
Subtract the new number by the original number
524 - 128 = 396
396 ÷ 128 = 3.09375
3.09375 x 100 = 309.38%