-62.73% is the change from 220 to 82
Calculation steps:
[( 82 - 220 ) ÷ 220] x 100 = -62.73%
Formula
Percentage change = [(82 - 220) / 220] x 100
Subtract the new number by the original number
82 - 220 = -138
-138 ÷ 220 = -0.6272727272727273
-0.6272727272727273 x 100 = -62.73%