396.36% is the change from 165 to 819
Calculation steps:
[( 819 - 165 ) ÷ 165] x 100 = 396.36%
Formula
Percentage change = [(819 - 165) / 165] x 100
Subtract the new number by the original number
819 - 165 = 654
654 ÷ 165 = 3.963636363636364
3.963636363636364 x 100 = 396.36%