18.9% is the change from 455 to 541
Calculation steps:
[( 541 - 455 ) ÷ 455] x 100 = 18.9%
Formula
Percentage change = [(541 - 455) / 455] x 100
Subtract the new number by the original number
541 - 455 = 86
86 ÷ 455 = 0.189010989010989
0.189010989010989 x 100 = 18.9%