-69.3% is the change from 671 to 206
Calculation steps:
[( 206 - 671 ) ÷ 671] x 100 = -69.3%
Formula
Percentage change = [(206 - 671) / 671] x 100
Subtract the new number by the original number
206 - 671 = -465
-465 ÷ 671 = -0.6929955290611028
-0.6929955290611028 x 100 = -69.3%