211.56% is the change from 320 to 997
Calculation steps:
[( 997 - 320 ) ÷ 320] x 100 = 211.56%
Formula
Percentage change = [(997 - 320) / 320] x 100
Subtract the new number by the original number
997 - 320 = 677
677 ÷ 320 = 2.115625
2.115625 x 100 = 211.56%