-36.83% is the change from 668 to 422
Calculation steps:
[( 422 - 668 ) ÷ 668] x 100 = -36.83%
Formula
Percentage change = [(422 - 668) / 668] x 100
Subtract the new number by the original number
422 - 668 = -246
-246 ÷ 668 = -0.36826347305389223
-0.36826347305389223 x 100 = -36.83%