910% is the change from 30 to 303
Calculation steps:
[( 303 - 30 ) ÷ 30] x 100 = 910%
Formula
Percentage change = [(303 - 30) / 30] x 100
Subtract the new number by the original number
303 - 30 = 273
273 ÷ 30 = 9.1
9.1 x 100 = 910%
Example