-6.39% is the change from 391 to 366
Calculation steps:
[( 366 - 391 ) ÷ 391] x 100 = -6.39%
Formula
Percentage change = [(366 - 391) / 391] x 100
Subtract the new number by the original number
366 - 391 = -25
-25 ÷ 391 = -0.0639386189258312
-0.0639386189258312 x 100 = -6.39%