2.1% is the change from 428 to 437
Calculation steps:
[( 437 - 428 ) ÷ 428] x 100 = 2.1%
Formula
Percentage change = [(437 - 428) / 428] x 100
Subtract the new number by the original number
437 - 428 = 9
9 ÷ 428 = 0.02102803738317757
0.02102803738317757 x 100 = 2.1%