4208.7% is the change from 23 to 991
Calculation steps:
[( 991 - 23 ) ÷ 23] x 100 = 4208.7%
Formula
Percentage change = [(991 - 23) / 23] x 100
Subtract the new number by the original number
991 - 23 = 968
968 ÷ 23 = 42.08695652173913
42.08695652173913 x 100 = 4208.7%