139.25% is the change from 321 to 768
Calculation steps:
[( 768 - 321 ) ÷ 321] x 100 = 139.25%
Formula
Percentage change = [(768 - 321) / 321] x 100
Subtract the new number by the original number
768 - 321 = 447
447 ÷ 321 = 1.3925233644859814
1.3925233644859814 x 100 = 139.25%