-25.96% is the change from 339 to 251
Calculation steps:
[( 251 - 339 ) ÷ 339] x 100 = -25.96%
Formula
Percentage change = [(251 - 339) / 339] x 100
Subtract the new number by the original number
251 - 339 = -88
-88 ÷ 339 = -0.25958702064896755
-0.25958702064896755 x 100 = -25.96%