17.73% is the change from 564 to 664
Calculation steps:
[( 664 - 564 ) ÷ 564] x 100 = 17.73%
Formula
Percentage change = [(664 - 564) / 564] x 100
Subtract the new number by the original number
664 - 564 = 100
100 ÷ 564 = 0.1773049645390071
0.1773049645390071 x 100 = 17.73%