-78.7% is the change from 230 to 49
Calculation steps:
[( 49 - 230 ) ÷ 230] x 100 = -78.7%
Formula
Percentage change = [(49 - 230) / 230] x 100
Subtract the new number by the original number
49 - 230 = -181
-181 ÷ 230 = -0.7869565217391304
-0.7869565217391304 x 100 = -78.7%