-65.02% is the change from 646 to 226
Calculation steps:
[( 226 - 646 ) ÷ 646] x 100 = -65.02%
Formula
Percentage change = [(226 - 646) / 646] x 100
Subtract the new number by the original number
226 - 646 = -420
-420 ÷ 646 = -0.6501547987616099
-0.6501547987616099 x 100 = -65.02%