4.52% is the change from 642 to 671
Calculation steps:
[( 671 - 642 ) ÷ 642] x 100 = 4.52%
Formula
Percentage change = [(671 - 642) / 642] x 100
Subtract the new number by the original number
671 - 642 = 29
29 ÷ 642 = 0.045171339563862926
0.045171339563862926 x 100 = 4.52%