3.64% is the change from 439 to 455
Calculation steps:
[( 455 - 439 ) ÷ 439] x 100 = 3.64%
Formula
Percentage change = [(455 - 439) / 439] x 100
Subtract the new number by the original number
455 - 439 = 16
16 ÷ 439 = 0.03644646924829157
0.03644646924829157 x 100 = 3.64%