337.28% is the change from 228 to 997
Calculation steps:
[( 997 - 228 ) ÷ 228] x 100 = 337.28%
Formula
Percentage change = [(997 - 228) / 228] x 100
Subtract the new number by the original number
997 - 228 = 769
769 ÷ 228 = 3.3728070175438596
3.3728070175438596 x 100 = 337.28%