800% is the change from 3 to 27
Calculation steps:
[( 27 - 3 ) ÷ 3] x 100 = 800%
Formula
Percentage change = [(27 - 3) / 3] x 100
Subtract the new number by the original number
27 - 3 = 24
24 ÷ 3 = 8
8 x 100 = 800%
Example