-72.82% is the change from 287 to 78
Calculation steps:
[( 78 - 287 ) ÷ 287] x 100 = -72.82%
Formula
Percentage change = [(78 - 287) / 287] x 100
Subtract the new number by the original number
78 - 287 = -209
-209 ÷ 287 = -0.7282229965156795
-0.7282229965156795 x 100 = -72.82%