-72.1% is the change from 663 to 185
Calculation steps:
[( 185 - 663 ) ÷ 663] x 100 = -72.1%
Formula
Percentage change = [(185 - 663) / 663] x 100
Subtract the new number by the original number
185 - 663 = -478
-478 ÷ 663 = -0.7209653092006033
-0.7209653092006033 x 100 = -72.1%