860% is the change from 30 to 288
Calculation steps:
[( 288 - 30 ) ÷ 30] x 100 = 860%
Formula
Percentage change = [(288 - 30) / 30] x 100
Subtract the new number by the original number
288 - 30 = 258
258 ÷ 30 = 8.6
8.6 x 100 = 860%
Example