860% is the change from 15 to 144
Calculation steps:
[( 144 - 15 ) ÷ 15] x 100 = 860%
Formula
Percentage change = [(144 - 15) / 15] x 100
Subtract the new number by the original number
144 - 15 = 129
129 ÷ 15 = 8.6
8.6 x 100 = 860%
Example