-65.2% is the change from 638 to 222
Calculation steps:
[( 222 - 638 ) ÷ 638] x 100 = -65.2%
Formula
Percentage change = [(222 - 638) / 638] x 100
Subtract the new number by the original number
222 - 638 = -416
-416 ÷ 638 = -0.6520376175548589
-0.6520376175548589 x 100 = -65.2%