18.36% is the change from 561 to 664
Calculation steps:
[( 664 - 561 ) ÷ 561] x 100 = 18.36%
Formula
Percentage change = [(664 - 561) / 561] x 100
Subtract the new number by the original number
664 - 561 = 103
103 ÷ 561 = 0.1836007130124777
0.1836007130124777 x 100 = 18.36%