6.66% is the change from 601 to 641
Calculation steps:
[( 641 - 601 ) ÷ 601] x 100 = 6.66%
Formula
Percentage change = [(641 - 601) / 601] x 100
Subtract the new number by the original number
641 - 601 = 40
40 ÷ 601 = 0.06655574043261231
0.06655574043261231 x 100 = 6.66%