257.14% is the change from 7 to 25
Calculation steps:
[( 25 - 7 ) ÷ 7] x 100 = 257.14%
Formula
Percentage change = [(25 - 7) / 7] x 100
Subtract the new number by the original number
25 - 7 = 18
18 ÷ 7 = 2.5714285714285716
2.5714285714285716 x 100 = 257.14%