27.3% is the change from 641 to 816
Calculation steps:
[( 816 - 641 ) ÷ 641] x 100 = 27.3%
Formula
Percentage change = [(816 - 641) / 641] x 100
Subtract the new number by the original number
816 - 641 = 175
175 ÷ 641 = 0.27301092043681746
0.27301092043681746 x 100 = 27.3%