279.85% is the change from 263 to 999
Calculation steps:
[( 999 - 263 ) ÷ 263] x 100 = 279.85%
Formula
Percentage change = [(999 - 263) / 263] x 100
Subtract the new number by the original number
999 - 263 = 736
736 ÷ 263 = 2.7984790874524714
2.7984790874524714 x 100 = 279.85%