-47.31% is the change from 391 to 206
Calculation steps:
[( 206 - 391 ) ÷ 391] x 100 = -47.31%
Formula
Percentage change = [(206 - 391) / 391] x 100
Subtract the new number by the original number
206 - 391 = -185
-185 ÷ 391 = -0.4731457800511509
-0.4731457800511509 x 100 = -47.31%