49.54% is the change from 216 to 323
Calculation steps:
[( 323 - 216 ) ÷ 216] x 100 = 49.54%
Formula
Percentage change = [(323 - 216) / 216] x 100
Subtract the new number by the original number
323 - 216 = 107
107 ÷ 216 = 0.49537037037037035
0.49537037037037035 x 100 = 49.54%