-25.08% is the change from 666 to 499
Calculation steps:
[( 499 - 666 ) ÷ 666] x 100 = -25.08%
Formula
Percentage change = [(499 - 666) / 666] x 100
Subtract the new number by the original number
499 - 666 = -167
-167 ÷ 666 = -0.25075075075075076
-0.25075075075075076 x 100 = -25.08%