-12.79% is the change from 391 to 341
Calculation steps:
[( 341 - 391 ) ÷ 391] x 100 = -12.79%
Formula
Percentage change = [(341 - 391) / 391] x 100
Subtract the new number by the original number
341 - 391 = -50
-50 ÷ 391 = -0.1278772378516624
-0.1278772378516624 x 100 = -12.79%