101.56% is the change from 321 to 647
Calculation steps:
[( 647 - 321 ) ÷ 321] x 100 = 101.56%
Formula
Percentage change = [(647 - 321) / 321] x 100
Subtract the new number by the original number
647 - 321 = 326
326 ÷ 321 = 1.0155763239875388
1.0155763239875388 x 100 = 101.56%