-48% is the change from 25 to 13
Calculation steps:
[( 13 - 25 ) ÷ 25] x 100 = -48%
Formula
Percentage change = [(13 - 25) / 25] x 100
Subtract the new number by the original number
13 - 25 = -12
-12 ÷ 25 = -0.48
-0.48 x 100 = -48%
Example