310.79% is the change from 241 to 990
Calculation steps:
[( 990 - 241 ) ÷ 241] x 100 = 310.79%
Formula
Percentage change = [(990 - 241) / 241] x 100
Subtract the new number by the original number
990 - 241 = 749
749 ÷ 241 = 3.107883817427386
3.107883817427386 x 100 = 310.79%