820% is the change from 10 to 92
Calculation steps:
[( 92 - 10 ) ÷ 10] x 100 = 820%
Formula
Percentage change = [(92 - 10) / 10] x 100
Subtract the new number by the original number
92 - 10 = 82
82 ÷ 10 = 8.2
8.2 x 100 = 820%
Example