-84.64% is the change from 280 to 43
Calculation steps:
[( 43 - 280 ) ÷ 280] x 100 = -84.64%
Formula
Percentage change = [(43 - 280) / 280] x 100
Subtract the new number by the original number
43 - 280 = -237
-237 ÷ 280 = -0.8464285714285714
-0.8464285714285714 x 100 = -84.64%