-65.42% is the change from 642 to 222
Calculation steps:
[( 222 - 642 ) ÷ 642] x 100 = -65.42%
Formula
Percentage change = [(222 - 642) / 642] x 100
Subtract the new number by the original number
222 - 642 = -420
-420 ÷ 642 = -0.6542056074766355
-0.6542056074766355 x 100 = -65.42%