104.49% is the change from 401 to 820
Calculation steps:
[( 820 - 401 ) ÷ 401] x 100 = 104.49%
Formula
Percentage change = [(820 - 401) / 401] x 100
Subtract the new number by the original number
820 - 401 = 419
419 ÷ 401 = 1.0448877805486285
1.0448877805486285 x 100 = 104.49%