-65.16% is the change from 643 to 224
Calculation steps:
[( 224 - 643 ) ÷ 643] x 100 = -65.16%
Formula
Percentage change = [(224 - 643) / 643] x 100
Subtract the new number by the original number
224 - 643 = -419
-419 ÷ 643 = -0.6516329704510109
-0.6516329704510109 x 100 = -65.16%