-73.8% is the change from 668 to 175
Calculation steps:
[( 175 - 668 ) ÷ 668] x 100 = -73.8%
Formula
Percentage change = [(175 - 668) / 668] x 100
Subtract the new number by the original number
175 - 668 = -493
-493 ÷ 668 = -0.7380239520958084
-0.7380239520958084 x 100 = -73.8%