142.99% is the change from 321 to 780
Calculation steps:
[( 780 - 321 ) ÷ 321] x 100 = 142.99%
Formula
Percentage change = [(780 - 321) / 321] x 100
Subtract the new number by the original number
780 - 321 = 459
459 ÷ 321 = 1.4299065420560748
1.4299065420560748 x 100 = 142.99%