-80.32% is the change from 249 to 49
Calculation steps:
[( 49 - 249 ) ÷ 249] x 100 = -80.32%
Formula
Percentage change = [(49 - 249) / 249] x 100
Subtract the new number by the original number
49 - 249 = -200
-200 ÷ 249 = -0.8032128514056225
-0.8032128514056225 x 100 = -80.32%