-71.76% is the change from 85 to 24
Calculation steps:
[( 24 - 85 ) ÷ 85] x 100 = -71.76%
Formula
Percentage change = [(24 - 85) / 85] x 100
Subtract the new number by the original number
24 - 85 = -61
-61 ÷ 85 = -0.7176470588235294
-0.7176470588235294 x 100 = -71.76%