15.8% is the change from 538 to 623
Calculation steps:
[( 623 - 538 ) ÷ 538] x 100 = 15.8%
Formula
Percentage change = [(623 - 538) / 538] x 100
Subtract the new number by the original number
623 - 538 = 85
85 ÷ 538 = 0.1579925650557621
0.1579925650557621 x 100 = 15.8%