-71.71% is the change from 668 to 189
Calculation steps:
[( 189 - 668 ) ÷ 668] x 100 = -71.71%
Formula
Percentage change = [(189 - 668) / 668] x 100
Subtract the new number by the original number
189 - 668 = -479
-479 ÷ 668 = -0.7170658682634731
-0.7170658682634731 x 100 = -71.71%