31.2% is the change from 641 to 841
Calculation steps:
[( 841 - 641 ) ÷ 641] x 100 = 31.2%
Formula
Percentage change = [(841 - 641) / 641] x 100
Subtract the new number by the original number
841 - 641 = 200
200 ÷ 641 = 0.31201248049922
0.31201248049922 x 100 = 31.2%