-65.47% is the change from 643 to 222
Calculation steps:
[( 222 - 643 ) ÷ 643] x 100 = -65.47%
Formula
Percentage change = [(222 - 643) / 643] x 100
Subtract the new number by the original number
222 - 643 = -421
-421 ÷ 643 = -0.6547433903576982
-0.6547433903576982 x 100 = -65.47%