-63.35% is the change from 663 to 243
Calculation steps:
[( 243 - 663 ) ÷ 663] x 100 = -63.35%
Formula
Percentage change = [(243 - 663) / 663] x 100
Subtract the new number by the original number
243 - 663 = -420
-420 ÷ 663 = -0.6334841628959276
-0.6334841628959276 x 100 = -63.35%