-83.24% is the change from 179 to 30
Calculation steps:
[( 30 - 179 ) ÷ 179] x 100 = -83.24%
Formula
Percentage change = [(30 - 179) / 179] x 100
Subtract the new number by the original number
30 - 179 = -149
-149 ÷ 179 = -0.8324022346368715
-0.8324022346368715 x 100 = -83.24%