350.45% is the change from 220 to 991
Calculation steps:
[( 991 - 220 ) ÷ 220] x 100 = 350.45%
Formula
Percentage change = [(991 - 220) / 220] x 100
Subtract the new number by the original number
991 - 220 = 771
771 ÷ 220 = 3.5045454545454544
3.5045454545454544 x 100 = 350.45%