3011.11% is the change from 9 to 280
Calculation steps:
[( 280 - 9 ) ÷ 9] x 100 = 3011.11%
Formula
Percentage change = [(280 - 9) / 9] x 100
Subtract the new number by the original number
280 - 9 = 271
271 ÷ 9 = 30.11111111111111
30.11111111111111 x 100 = 3011.11%