-51.93% is the change from 181 to 87
Calculation steps:
[( 87 - 181 ) ÷ 181] x 100 = -51.93%
Formula
Percentage change = [(87 - 181) / 181] x 100
Subtract the new number by the original number
87 - 181 = -94
-94 ÷ 181 = -0.5193370165745856
-0.5193370165745856 x 100 = -51.93%