-71.64% is the change from 663 to 188
Calculation steps:
[( 188 - 663 ) ÷ 663] x 100 = -71.64%
Formula
Percentage change = [(188 - 663) / 663] x 100
Subtract the new number by the original number
188 - 663 = -475
-475 ÷ 663 = -0.7164404223227753
-0.7164404223227753 x 100 = -71.64%