18.24% is the change from 455 to 538
Calculation steps:
[( 538 - 455 ) ÷ 455] x 100 = 18.24%
Formula
Percentage change = [(538 - 455) / 455] x 100
Subtract the new number by the original number
538 - 455 = 83
83 ÷ 455 = 0.1824175824175824
0.1824175824175824 x 100 = 18.24%