740% is the change from 30 to 252
Calculation steps:
[( 252 - 30 ) ÷ 30] x 100 = 740%
Formula
Percentage change = [(252 - 30) / 30] x 100
Subtract the new number by the original number
252 - 30 = 222
222 ÷ 30 = 7.4
7.4 x 100 = 740%
Example