2720% is the change from 30 to 846
Calculation steps:
[( 846 - 30 ) ÷ 30] x 100 = 2720%
Formula
Percentage change = [(846 - 30) / 30] x 100
Subtract the new number by the original number
846 - 30 = 816
816 ÷ 30 = 27.2
27.2 x 100 = 2720%
Example