-86.7% is the change from 391 to 52
Calculation steps:
[( 52 - 391 ) ÷ 391] x 100 = -86.7%
Formula
Percentage change = [(52 - 391) / 391] x 100
Subtract the new number by the original number
52 - 391 = -339
-339 ÷ 391 = -0.8670076726342711
-0.8670076726342711 x 100 = -86.7%