-9.8% is the change from 663 to 598
Calculation steps:
[( 598 - 663 ) ÷ 663] x 100 = -9.8%
Formula
Percentage change = [(598 - 663) / 663] x 100
Subtract the new number by the original number
598 - 663 = -65
-65 ÷ 663 = -0.09803921568627451
-0.09803921568627451 x 100 = -9.8%