3469.57% is the change from 23 to 821
Calculation steps:
[( 821 - 23 ) ÷ 23] x 100 = 3469.57%
Formula
Percentage change = [(821 - 23) / 23] x 100
Subtract the new number by the original number
821 - 23 = 798
798 ÷ 23 = 34.69565217391305
34.69565217391305 x 100 = 3469.57%