-80.24% is the change from 663 to 131
Calculation steps:
[( 131 - 663 ) ÷ 663] x 100 = -80.24%
Formula
Percentage change = [(131 - 663) / 663] x 100
Subtract the new number by the original number
131 - 663 = -532
-532 ÷ 663 = -0.8024132730015083
-0.8024132730015083 x 100 = -80.24%