830% is the change from 10 to 93
Calculation steps:
[( 93 - 10 ) ÷ 10] x 100 = 830%
Formula
Percentage change = [(93 - 10) / 10] x 100
Subtract the new number by the original number
93 - 10 = 83
83 ÷ 10 = 8.3
8.3 x 100 = 830%
Example