-66.97% is the change from 663 to 219
Calculation steps:
[( 219 - 663 ) ÷ 663] x 100 = -66.97%
Formula
Percentage change = [(219 - 663) / 663] x 100
Subtract the new number by the original number
219 - 663 = -444
-444 ÷ 663 = -0.669683257918552
-0.669683257918552 x 100 = -66.97%