-25.22% is the change from 341 to 255
Calculation steps:
[( 255 - 341 ) ÷ 341] x 100 = -25.22%
Formula
Percentage change = [(255 - 341) / 341] x 100
Subtract the new number by the original number
255 - 341 = -86
-86 ÷ 341 = -0.25219941348973607
-0.25219941348973607 x 100 = -25.22%