310.41% is the change from 221 to 907
Calculation steps:
[( 907 - 221 ) ÷ 221] x 100 = 310.41%
Formula
Percentage change = [(907 - 221) / 221] x 100
Subtract the new number by the original number
907 - 221 = 686
686 ÷ 221 = 3.1040723981900453
3.1040723981900453 x 100 = 310.41%