31.83% is the change from 641 to 845
Calculation steps:
[( 845 - 641 ) ÷ 641] x 100 = 31.83%
Formula
Percentage change = [(845 - 641) / 641] x 100
Subtract the new number by the original number
845 - 641 = 204
204 ÷ 641 = 0.31825273010920435
0.31825273010920435 x 100 = 31.83%