3434.78% is the change from 23 to 813
Calculation steps:
[( 813 - 23 ) ÷ 23] x 100 = 3434.78%
Formula
Percentage change = [(813 - 23) / 23] x 100
Subtract the new number by the original number
813 - 23 = 790
790 ÷ 23 = 34.34782608695652
34.34782608695652 x 100 = 3434.78%