8200% is the change from 2 to 166
Calculation steps:
[( 166 - 2 ) ÷ 2] x 100 = 8200%
Formula
Percentage change = [(166 - 2) / 2] x 100
Subtract the new number by the original number
166 - 2 = 164
164 ÷ 2 = 82
82 x 100 = 8200%
Example