-47.2% is the change from 161 to 85
Calculation steps:
[( 85 - 161 ) ÷ 161] x 100 = -47.2%
Formula
Percentage change = [(85 - 161) / 161] x 100
Subtract the new number by the original number
85 - 161 = -76
-76 ÷ 161 = -0.4720496894409938
-0.4720496894409938 x 100 = -47.2%