2800% is the change from 31 to 899
Calculation steps:
[( 899 - 31 ) ÷ 31] x 100 = 2800%
Formula
Percentage change = [(899 - 31) / 31] x 100
Subtract the new number by the original number
899 - 31 = 868
868 ÷ 31 = 28
28 x 100 = 2800%
Example