128.57% is the change from 336 to 768
Calculation steps:
[( 768 - 336 ) ÷ 336] x 100 = 128.57%
Formula
Percentage change = [(768 - 336) / 336] x 100
Subtract the new number by the original number
768 - 336 = 432
432 ÷ 336 = 1.2857142857142858
1.2857142857142858 x 100 = 128.57%