412.5% is the change from 16 to 82
Calculation steps:
[( 82 - 16 ) ÷ 16] x 100 = 412.5%
Formula
Percentage change = [(82 - 16) / 16] x 100
Subtract the new number by the original number
82 - 16 = 66
66 ÷ 16 = 4.125
4.125 x 100 = 412.5%
Example