3752.38% is the change from 21 to 809
Calculation steps:
[( 809 - 21 ) ÷ 21] x 100 = 3752.38%
Formula
Percentage change = [(809 - 21) / 21] x 100
Subtract the new number by the original number
809 - 21 = 788
788 ÷ 21 = 37.523809523809526
37.523809523809526 x 100 = 3752.38%