99.38% is the change from 322 to 642
Calculation steps:
[( 642 - 322 ) ÷ 322] x 100 = 99.38%
Formula
Percentage change = [(642 - 322) / 322] x 100
Subtract the new number by the original number
642 - 322 = 320
320 ÷ 322 = 0.9937888198757764
0.9937888198757764 x 100 = 99.38%