-25.23% is the change from 666 to 498
Calculation steps:
[( 498 - 666 ) ÷ 666] x 100 = -25.23%
Formula
Percentage change = [(498 - 666) / 666] x 100
Subtract the new number by the original number
498 - 666 = -168
-168 ÷ 666 = -0.25225225225225223
-0.25225225225225223 x 100 = -25.23%