-61.64% is the change from 730 to 280
Calculation steps:
[( 280 - 730 ) ÷ 730] x 100 = -61.64%
Formula
Percentage change = [(280 - 730) / 730] x 100
Subtract the new number by the original number
280 - 730 = -450
-450 ÷ 730 = -0.6164383561643836
-0.6164383561643836 x 100 = -61.64%