3400% is the change from 23 to 805
Calculation steps:
[( 805 - 23 ) ÷ 23] x 100 = 3400%
Formula
Percentage change = [(805 - 23) / 23] x 100
Subtract the new number by the original number
805 - 23 = 782
782 ÷ 23 = 34
34 x 100 = 3400%
Example