-51.4% is the change from 179 to 87
Calculation steps:
[( 87 - 179 ) ÷ 179] x 100 = -51.4%
Formula
Percentage change = [(87 - 179) / 179] x 100
Subtract the new number by the original number
87 - 179 = -92
-92 ÷ 179 = -0.5139664804469274
-0.5139664804469274 x 100 = -51.4%