-25.64% is the change from 663 to 493
Calculation steps:
[( 493 - 663 ) ÷ 663] x 100 = -25.64%
Formula
Percentage change = [(493 - 663) / 663] x 100
Subtract the new number by the original number
493 - 663 = -170
-170 ÷ 663 = -0.2564102564102564
-0.2564102564102564 x 100 = -25.64%