-46.54% is the change from 159 to 85
Calculation steps:
[( 85 - 159 ) ÷ 159] x 100 = -46.54%
Formula
Percentage change = [(85 - 159) / 159] x 100
Subtract the new number by the original number
85 - 159 = -74
-74 ÷ 159 = -0.46540880503144655
-0.46540880503144655 x 100 = -46.54%