-31.15% is the change from 963 to 663
Calculation steps:
[( 663 - 963 ) ÷ 963] x 100 = -31.15%
Formula
Percentage change = [(663 - 963) / 963] x 100
Subtract the new number by the original number
663 - 963 = -300
-300 ÷ 963 = -0.3115264797507788
-0.3115264797507788 x 100 = -31.15%