212.5% is the change from 8 to 25
Calculation steps:
[( 25 - 8 ) ÷ 8] x 100 = 212.5%
Formula
Percentage change = [(25 - 8) / 8] x 100
Subtract the new number by the original number
25 - 8 = 17
17 ÷ 8 = 2.125
2.125 x 100 = 212.5%
Example