-39.02% is the change from 82 to 50
Calculation steps:
[( 50 - 82 ) ÷ 82] x 100 = -39.02%
Formula
Percentage change = [(50 - 82) / 82] x 100
Subtract the new number by the original number
50 - 82 = -32
-32 ÷ 82 = -0.3902439024390244
-0.3902439024390244 x 100 = -39.02%