-44.29% is the change from 499 to 278
Calculation steps:
[( 278 - 499 ) ÷ 499] x 100 = -44.29%
Formula
Percentage change = [(278 - 499) / 499] x 100
Subtract the new number by the original number
278 - 499 = -221
-221 ÷ 499 = -0.44288577154308617
-0.44288577154308617 x 100 = -44.29%