3.39% is the change from 442 to 457
Calculation steps:
[( 457 - 442 ) ÷ 442] x 100 = 3.39%
Formula
Percentage change = [(457 - 442) / 442] x 100
Subtract the new number by the original number
457 - 442 = 15
15 ÷ 442 = 0.033936651583710405
0.033936651583710405 x 100 = 3.39%