100% is the change from 384 to 768
Calculation steps:
[( 768 - 384 ) ÷ 384] x 100 = 100%
Formula
Percentage change = [(768 - 384) / 384] x 100
Subtract the new number by the original number
768 - 384 = 384
384 ÷ 384 = 1
1 x 100 = 100%
Example