-90.71% is the change from 280 to 26
Calculation steps:
[( 26 - 280 ) ÷ 280] x 100 = -90.71%
Formula
Percentage change = [(26 - 280) / 280] x 100
Subtract the new number by the original number
26 - 280 = -254
-254 ÷ 280 = -0.9071428571428571
-0.9071428571428571 x 100 = -90.71%