334.65% is the change from 228 to 991
Calculation steps:
[( 991 - 228 ) ÷ 228] x 100 = 334.65%
Formula
Percentage change = [(991 - 228) / 228] x 100
Subtract the new number by the original number
991 - 228 = 763
763 ÷ 228 = 3.3464912280701755
3.3464912280701755 x 100 = 334.65%