-9.65% is the change from 663 to 599
Calculation steps:
[( 599 - 663 ) ÷ 663] x 100 = -9.65%
Formula
Percentage change = [(599 - 663) / 663] x 100
Subtract the new number by the original number
599 - 663 = -64
-64 ÷ 663 = -0.09653092006033183
-0.09653092006033183 x 100 = -9.65%