-72.8% is the change from 1000 to 272
Calculation steps:
[( 272 - 1000 ) ÷ 1000] x 100 = -72.8%
Formula
Percentage change = [(272 - 1000) / 1000] x 100
Subtract the new number by the original number
272 - 1000 = -728
-728 ÷ 1000 = -0.728
-0.728 x 100 = -72.8%