-96.71% is the change from 668 to 22
Calculation steps:
[( 22 - 668 ) ÷ 668] x 100 = -96.71%
Formula
Percentage change = [(22 - 668) / 668] x 100
Subtract the new number by the original number
22 - 668 = -646
-646 ÷ 668 = -0.9670658682634731
-0.9670658682634731 x 100 = -96.71%