4652.38% is the change from 21 to 998
Calculation steps:
[( 998 - 21 ) ÷ 21] x 100 = 4652.38%
Formula
Percentage change = [(998 - 21) / 21] x 100
Subtract the new number by the original number
998 - 21 = 977
977 ÷ 21 = 46.523809523809526
46.523809523809526 x 100 = 4652.38%