-91.09% is the change from 920 to 82
Calculation steps:
[( 82 - 920 ) ÷ 920] x 100 = -91.09%
Formula
Percentage change = [(82 - 920) / 920] x 100
Subtract the new number by the original number
82 - 920 = -838
-838 ÷ 920 = -0.9108695652173913
-0.9108695652173913 x 100 = -91.09%