710% is the change from 30 to 243
Calculation steps:
[( 243 - 30 ) ÷ 30] x 100 = 710%
Formula
Percentage change = [(243 - 30) / 30] x 100
Subtract the new number by the original number
243 - 30 = 213
213 ÷ 30 = 7.1
7.1 x 100 = 710%
Example