-65.32% is the change from 643 to 223
Calculation steps:
[( 223 - 643 ) ÷ 643] x 100 = -65.32%
Formula
Percentage change = [(223 - 643) / 643] x 100
Subtract the new number by the original number
223 - 643 = -420
-420 ÷ 643 = -0.6531881804043546
-0.6531881804043546 x 100 = -65.32%