-43.82% is the change from 89 to 50
Calculation steps:
[( 50 - 89 ) ÷ 89] x 100 = -43.82%
Formula
Percentage change = [(50 - 89) / 89] x 100
Subtract the new number by the original number
50 - 89 = -39
-39 ÷ 89 = -0.43820224719101125
-0.43820224719101125 x 100 = -43.82%