-66.77% is the change from 668 to 222
Calculation steps:
[( 222 - 668 ) ÷ 668] x 100 = -66.77%
Formula
Percentage change = [(222 - 668) / 668] x 100
Subtract the new number by the original number
222 - 668 = -446
-446 ÷ 668 = -0.6676646706586826
-0.6676646706586826 x 100 = -66.77%