-59.52% is the change from 42 to 17
Calculation steps:
[( 17 - 42 ) ÷ 42] x 100 = -59.52%
Formula
Percentage change = [(17 - 42) / 42] x 100
Subtract the new number by the original number
17 - 42 = -25
-25 ÷ 42 = -0.5952380952380952
-0.5952380952380952 x 100 = -59.52%