3.29% is the change from 608 to 628
Calculation steps:
[( 628 - 608 ) ÷ 608] x 100 = 3.29%
Formula
Percentage change = [(628 - 608) / 608] x 100
Subtract the new number by the original number
628 - 608 = 20
20 ÷ 608 = 0.03289473684210526
0.03289473684210526 x 100 = 3.29%