2.75% is the change from 581 to 597
Calculation steps:
[( 597 - 581 ) ÷ 581] x 100 = 2.75%
Formula
Percentage change = [(597 - 581) / 581] x 100
Subtract the new number by the original number
597 - 581 = 16
16 ÷ 581 = 0.027538726333907058
0.027538726333907058 x 100 = 2.75%