490.48% is the change from 21 to 124
Calculation steps:
[( 124 - 21 ) ÷ 21] x 100 = 490.48%
Formula
Percentage change = [(124 - 21) / 21] x 100
Subtract the new number by the original number
124 - 21 = 103
103 ÷ 21 = 4.904761904761905
4.904761904761905 x 100 = 490.48%