7.7% is the change from 623 to 671
Calculation steps:
[( 671 - 623 ) ÷ 623] x 100 = 7.7%
Formula
Percentage change = [(671 - 623) / 623] x 100
Subtract the new number by the original number
671 - 623 = 48
48 ÷ 623 = 0.07704654895666131
0.07704654895666131 x 100 = 7.7%