321.88% is the change from 224 to 945
Calculation steps:
[( 945 - 224 ) ÷ 224] x 100 = 321.88%
Formula
Percentage change = [(945 - 224) / 224] x 100
Subtract the new number by the original number
945 - 224 = 721
721 ÷ 224 = 3.21875
3.21875 x 100 = 321.88%