29.17% is the change from 641 to 828
Calculation steps:
[( 828 - 641 ) ÷ 641] x 100 = 29.17%
Formula
Percentage change = [(828 - 641) / 641] x 100
Subtract the new number by the original number
828 - 641 = 187
187 ÷ 641 = 0.2917316692667707
0.2917316692667707 x 100 = 29.17%