198.13% is the change from 321 to 957
Calculation steps:
[( 957 - 321 ) ÷ 321] x 100 = 198.13%
Formula
Percentage change = [(957 - 321) / 321] x 100
Subtract the new number by the original number
957 - 321 = 636
636 ÷ 321 = 1.9813084112149533
1.9813084112149533 x 100 = 198.13%