100% is the change from 329 to 658
Calculation steps:
[( 658 - 329 ) ÷ 329] x 100 = 100%
Formula
Percentage change = [(658 - 329) / 329] x 100
Subtract the new number by the original number
658 - 329 = 329
329 ÷ 329 = 1
1 x 100 = 100%
Example