2.48% is the change from 606 to 621
Calculation steps:
[( 621 - 606 ) ÷ 606] x 100 = 2.48%
Formula
Percentage change = [(621 - 606) / 606] x 100
Subtract the new number by the original number
621 - 606 = 15
15 ÷ 606 = 0.024752475247524754
0.024752475247524754 x 100 = 2.48%