-8.3% is the change from 663 to 608
Calculation steps:
[( 608 - 663 ) ÷ 663] x 100 = -8.3%
Formula
Percentage change = [(608 - 663) / 663] x 100
Subtract the new number by the original number
608 - 663 = -55
-55 ÷ 663 = -0.08295625942684766
-0.08295625942684766 x 100 = -8.3%