-65.76% is the change from 663 to 227
Calculation steps:
[( 227 - 663 ) ÷ 663] x 100 = -65.76%
Formula
Percentage change = [(227 - 663) / 663] x 100
Subtract the new number by the original number
227 - 663 = -436
-436 ÷ 663 = -0.6576168929110106
-0.6576168929110106 x 100 = -65.76%