309.92% is the change from 242 to 992
Calculation steps:
[( 992 - 242 ) ÷ 242] x 100 = 309.92%
Formula
Percentage change = [(992 - 242) / 242] x 100
Subtract the new number by the original number
992 - 242 = 750
750 ÷ 242 = 3.0991735537190084
3.0991735537190084 x 100 = 309.92%