-65.33% is the change from 646 to 224
Calculation steps:
[( 224 - 646 ) ÷ 646] x 100 = -65.33%
Formula
Percentage change = [(224 - 646) / 646] x 100
Subtract the new number by the original number
224 - 646 = -422
-422 ÷ 646 = -0.653250773993808
-0.653250773993808 x 100 = -65.33%