104.64% is the change from 323 to 661
Calculation steps:
[( 661 - 323 ) ÷ 323] x 100 = 104.64%
Formula
Percentage change = [(661 - 323) / 323] x 100
Subtract the new number by the original number
661 - 323 = 338
338 ÷ 323 = 1.0464396284829722
1.0464396284829722 x 100 = 104.64%