224.59% is the change from 305 to 990
Calculation steps:
[( 990 - 305 ) ÷ 305] x 100 = 224.59%
Formula
Percentage change = [(990 - 305) / 305] x 100
Subtract the new number by the original number
990 - 305 = 685
685 ÷ 305 = 2.2459016393442623
2.2459016393442623 x 100 = 224.59%