-46.95% is the change from 164 to 87
Calculation steps:
[( 87 - 164 ) ÷ 164] x 100 = -46.95%
Formula
Percentage change = [(87 - 164) / 164] x 100
Subtract the new number by the original number
87 - 164 = -77
-77 ÷ 164 = -0.4695121951219512
-0.4695121951219512 x 100 = -46.95%