303.95% is the change from 228 to 921
Calculation steps:
[( 921 - 228 ) ÷ 228] x 100 = 303.95%
Formula
Percentage change = [(921 - 228) / 228] x 100
Subtract the new number by the original number
921 - 228 = 693
693 ÷ 228 = 3.039473684210526
3.039473684210526 x 100 = 303.95%