20.66% is the change from 455 to 549
Calculation steps:
[( 549 - 455 ) ÷ 455] x 100 = 20.66%
Formula
Percentage change = [(549 - 455) / 455] x 100
Subtract the new number by the original number
549 - 455 = 94
94 ÷ 455 = 0.20659340659340658
0.20659340659340658 x 100 = 20.66%