-32.23% is the change from 121 to 82
Calculation steps:
[( 82 - 121 ) ÷ 121] x 100 = -32.23%
Formula
Percentage change = [(82 - 121) / 121] x 100
Subtract the new number by the original number
82 - 121 = -39
-39 ÷ 121 = -0.32231404958677684
-0.32231404958677684 x 100 = -32.23%