67.8% is the change from 323 to 542
Calculation steps:
[( 542 - 323 ) ÷ 323] x 100 = 67.8%
Formula
Percentage change = [(542 - 323) / 323] x 100
Subtract the new number by the original number
542 - 323 = 219
219 ÷ 323 = 0.6780185758513931
0.6780185758513931 x 100 = 67.8%