-42% is the change from 100 to 58
Calculation steps:
[( 58 - 100 ) ÷ 100] x 100 = -42%
Formula
Percentage change = [(58 - 100) / 100] x 100
Subtract the new number by the original number
58 - 100 = -42
-42 ÷ 100 = -0.42
-0.42 x 100 = -42%
Example