-49.41% is the change from 85 to 43
Calculation steps:
[( 43 - 85 ) ÷ 85] x 100 = -49.41%
Formula
Percentage change = [(43 - 85) / 85] x 100
Subtract the new number by the original number
43 - 85 = -42
-42 ÷ 85 = -0.49411764705882355
-0.49411764705882355 x 100 = -49.41%