2.51% is the change from 598 to 613
Calculation steps:
[( 613 - 598 ) ÷ 598] x 100 = 2.51%
Formula
Percentage change = [(613 - 598) / 598] x 100
Subtract the new number by the original number
613 - 598 = 15
15 ÷ 598 = 0.02508361204013378
0.02508361204013378 x 100 = 2.51%