280% is the change from 30 to 114
Calculation steps:
[( 114 - 30 ) ÷ 30] x 100 = 280%
Formula
Percentage change = [(114 - 30) / 30] x 100
Subtract the new number by the original number
114 - 30 = 84
84 ÷ 30 = 2.8
2.8 x 100 = 280%
Example