309.33% is the change from 225 to 921
Calculation steps:
[( 921 - 225 ) ÷ 225] x 100 = 309.33%
Formula
Percentage change = [(921 - 225) / 225] x 100
Subtract the new number by the original number
921 - 225 = 696
696 ÷ 225 = 3.0933333333333333
3.0933333333333333 x 100 = 309.33%