-15.84% is the change from 341 to 287
Calculation steps:
[( 287 - 341 ) ÷ 341] x 100 = -15.84%
Formula
Percentage change = [(287 - 341) / 341] x 100
Subtract the new number by the original number
287 - 341 = -54
-54 ÷ 341 = -0.15835777126099707
-0.15835777126099707 x 100 = -15.84%