98.9% is the change from 455 to 905
Calculation steps:
[( 905 - 455 ) ÷ 455] x 100 = 98.9%
Formula
Percentage change = [(905 - 455) / 455] x 100
Subtract the new number by the original number
905 - 455 = 450
450 ÷ 455 = 0.989010989010989
0.989010989010989 x 100 = 98.9%