-49.72% is the change from 179 to 90
Calculation steps:
[( 90 - 179 ) ÷ 179] x 100 = -49.72%
Formula
Percentage change = [(90 - 179) / 179] x 100
Subtract the new number by the original number
90 - 179 = -89
-89 ÷ 179 = -0.4972067039106145
-0.4972067039106145 x 100 = -49.72%