-43.5% is the change from 492 to 278
Calculation steps:
[( 278 - 492 ) ÷ 492] x 100 = -43.5%
Formula
Percentage change = [(278 - 492) / 492] x 100
Subtract the new number by the original number
278 - 492 = -214
-214 ÷ 492 = -0.4349593495934959
-0.4349593495934959 x 100 = -43.5%