-31.44% is the change from 967 to 663
Calculation steps:
[( 663 - 967 ) ÷ 967] x 100 = -31.44%
Formula
Percentage change = [(663 - 967) / 967] x 100
Subtract the new number by the original number
663 - 967 = -304
-304 ÷ 967 = -0.31437435367114785
-0.31437435367114785 x 100 = -31.44%