334.39% is the change from 189 to 821
Calculation steps:
[( 821 - 189 ) ÷ 189] x 100 = 334.39%
Formula
Percentage change = [(821 - 189) / 189] x 100
Subtract the new number by the original number
821 - 189 = 632
632 ÷ 189 = 3.3439153439153437
3.3439153439153437 x 100 = 334.39%