-46.99% is the change from 166 to 88
Calculation steps:
[( 88 - 166 ) ÷ 166] x 100 = -46.99%
Formula
Percentage change = [(88 - 166) / 166] x 100
Subtract the new number by the original number
88 - 166 = -78
-78 ÷ 166 = -0.46987951807228917
-0.46987951807228917 x 100 = -46.99%