65.81% is the change from 389 to 645
Calculation steps:
[( 645 - 389 ) ÷ 389] x 100 = 65.81%
Formula
Percentage change = [(645 - 389) / 389] x 100
Subtract the new number by the original number
645 - 389 = 256
256 ÷ 389 = 0.6580976863753213
0.6580976863753213 x 100 = 65.81%