97.2% is the change from 321 to 633
Calculation steps:
[( 633 - 321 ) ÷ 321] x 100 = 97.2%
Formula
Percentage change = [(633 - 321) / 321] x 100
Subtract the new number by the original number
633 - 321 = 312
312 ÷ 321 = 0.9719626168224299
0.9719626168224299 x 100 = 97.2%