-40.48% is the change from 42 to 25
Calculation steps:
[( 25 - 42 ) ÷ 42] x 100 = -40.48%
Formula
Percentage change = [(25 - 42) / 42] x 100
Subtract the new number by the original number
25 - 42 = -17
-17 ÷ 42 = -0.40476190476190477
-0.40476190476190477 x 100 = -40.48%