109.77% is the change from 389 to 816
Calculation steps:
[( 816 - 389 ) ÷ 389] x 100 = 109.77%
Formula
Percentage change = [(816 - 389) / 389] x 100
Subtract the new number by the original number
816 - 389 = 427
427 ÷ 389 = 1.0976863753213368
1.0976863753213368 x 100 = 109.77%