-32.14% is the change from 280 to 190
Calculation steps:
[( 190 - 280 ) ÷ 280] x 100 = -32.14%
Formula
Percentage change = [(190 - 280) / 280] x 100
Subtract the new number by the original number
190 - 280 = -90
-90 ÷ 280 = -0.32142857142857145
-0.32142857142857145 x 100 = -32.14%