-71.39% is the change from 671 to 192
Calculation steps:
[( 192 - 671 ) ÷ 671] x 100 = -71.39%
Formula
Percentage change = [(192 - 671) / 671] x 100
Subtract the new number by the original number
192 - 671 = -479
-479 ÷ 671 = -0.713859910581222
-0.713859910581222 x 100 = -71.39%