-15.32% is the change from 666 to 564
Calculation steps:
[( 564 - 666 ) ÷ 666] x 100 = -15.32%
Formula
Percentage change = [(564 - 666) / 666] x 100
Subtract the new number by the original number
564 - 666 = -102
-102 ÷ 666 = -0.15315315315315314
-0.15315315315315314 x 100 = -15.32%