94.06% is the change from 320 to 621
Calculation steps:
[( 621 - 320 ) ÷ 320] x 100 = 94.06%
Formula
Percentage change = [(621 - 320) / 320] x 100
Subtract the new number by the original number
621 - 320 = 301
301 ÷ 320 = 0.940625
0.940625 x 100 = 94.06%