-25.34% is the change from 663 to 495
Calculation steps:
[( 495 - 663 ) ÷ 663] x 100 = -25.34%
Formula
Percentage change = [(495 - 663) / 663] x 100
Subtract the new number by the original number
495 - 663 = -168
-168 ÷ 663 = -0.25339366515837103
-0.25339366515837103 x 100 = -25.34%