808.7% is the change from 23 to 209
Calculation steps:
[( 209 - 23 ) ÷ 23] x 100 = 808.7%
Formula
Percentage change = [(209 - 23) / 23] x 100
Subtract the new number by the original number
209 - 23 = 186
186 ÷ 23 = 8.08695652173913
8.08695652173913 x 100 = 808.7%