306.7% is the change from 224 to 911
Calculation steps:
[( 911 - 224 ) ÷ 224] x 100 = 306.7%
Formula
Percentage change = [(911 - 224) / 224] x 100
Subtract the new number by the original number
911 - 224 = 687
687 ÷ 224 = 3.0669642857142856
3.0669642857142856 x 100 = 306.7%