227.27% is the change from 99 to 324
Calculation steps:
[( 324 - 99 ) ÷ 99] x 100 = 227.27%
Formula
Percentage change = [(324 - 99) / 99] x 100
Subtract the new number by the original number
324 - 99 = 225
225 ÷ 99 = 2.272727272727273
2.272727272727273 x 100 = 227.27%