-65.26% is the change from 642 to 223
Calculation steps:
[( 223 - 642 ) ÷ 642] x 100 = -65.26%
Formula
Percentage change = [(223 - 642) / 642] x 100
Subtract the new number by the original number
223 - 642 = -419
-419 ÷ 642 = -0.6526479750778816
-0.6526479750778816 x 100 = -65.26%