104.74% is the change from 401 to 821
Calculation steps:
[( 821 - 401 ) ÷ 401] x 100 = 104.74%
Formula
Percentage change = [(821 - 401) / 401] x 100
Subtract the new number by the original number
821 - 401 = 420
420 ÷ 401 = 1.0473815461346634
1.0473815461346634 x 100 = 104.74%