45.24% is the change from 641 to 931
Calculation steps:
[( 931 - 641 ) ÷ 641] x 100 = 45.24%
Formula
Percentage change = [(931 - 641) / 641] x 100
Subtract the new number by the original number
931 - 641 = 290
290 ÷ 641 = 0.45241809672386896
0.45241809672386896 x 100 = 45.24%