6.75% is the change from 622 to 664
Calculation steps:
[( 664 - 622 ) ÷ 622] x 100 = 6.75%
Formula
Percentage change = [(664 - 622) / 622] x 100
Subtract the new number by the original number
664 - 622 = 42
42 ÷ 622 = 0.06752411575562701
0.06752411575562701 x 100 = 6.75%