-82.93% is the change from 287 to 49
Calculation steps:
[( 49 - 287 ) ÷ 287] x 100 = -82.93%
Formula
Percentage change = [(49 - 287) / 287] x 100
Subtract the new number by the original number
49 - 287 = -238
-238 ÷ 287 = -0.8292682926829268
-0.8292682926829268 x 100 = -82.93%