-65.61% is the change from 663 to 228
Calculation steps:
[( 228 - 663 ) ÷ 663] x 100 = -65.61%
Formula
Percentage change = [(228 - 663) / 663] x 100
Subtract the new number by the original number
228 - 663 = -435
-435 ÷ 663 = -0.6561085972850679
-0.6561085972850679 x 100 = -65.61%