2900% is the change from 31 to 930
Calculation steps:
[( 930 - 31 ) ÷ 31] x 100 = 2900%
Formula
Percentage change = [(930 - 31) / 31] x 100
Subtract the new number by the original number
930 - 31 = 899
899 ÷ 31 = 29
29 x 100 = 2900%
Example