-71.19% is the change from 663 to 191
Calculation steps:
[( 191 - 663 ) ÷ 663] x 100 = -71.19%
Formula
Percentage change = [(191 - 663) / 663] x 100
Subtract the new number by the original number
191 - 663 = -472
-472 ÷ 663 = -0.7119155354449472
-0.7119155354449472 x 100 = -71.19%