-74.06% is the change from 663 to 172
Calculation steps:
[( 172 - 663 ) ÷ 663] x 100 = -74.06%
Formula
Percentage change = [(172 - 663) / 663] x 100
Subtract the new number by the original number
172 - 663 = -491
-491 ÷ 663 = -0.7405731523378583
-0.7405731523378583 x 100 = -74.06%