94.55% is the change from 422 to 821
Calculation steps:
[( 821 - 422 ) ÷ 422] x 100 = 94.55%
Formula
Percentage change = [(821 - 422) / 422] x 100
Subtract the new number by the original number
821 - 422 = 399
399 ÷ 422 = 0.9454976303317536
0.9454976303317536 x 100 = 94.55%