-84.32% is the change from 287 to 45
Calculation steps:
[( 45 - 287 ) ÷ 287] x 100 = -84.32%
Formula
Percentage change = [(45 - 287) / 287] x 100
Subtract the new number by the original number
45 - 287 = -242
-242 ÷ 287 = -0.8432055749128919
-0.8432055749128919 x 100 = -84.32%