186.92% is the change from 321 to 921
Calculation steps:
[( 921 - 321 ) ÷ 321] x 100 = 186.92%
Formula
Percentage change = [(921 - 321) / 321] x 100
Subtract the new number by the original number
921 - 321 = 600
600 ÷ 321 = 1.8691588785046729
1.8691588785046729 x 100 = 186.92%