-26.32% is the change from 380 to 280
Calculation steps:
[( 280 - 380 ) ÷ 380] x 100 = -26.32%
Formula
Percentage change = [(280 - 380) / 380] x 100
Subtract the new number by the original number
280 - 380 = -100
-100 ÷ 380 = -0.2631578947368421
-0.2631578947368421 x 100 = -26.32%