210.59% is the change from 321 to 997
Calculation steps:
[( 997 - 321 ) ÷ 321] x 100 = 210.59%
Formula
Percentage change = [(997 - 321) / 321] x 100
Subtract the new number by the original number
997 - 321 = 676
676 ÷ 321 = 2.1059190031152646
2.1059190031152646 x 100 = 210.59%