-42.63% is the change from 312 to 179
Calculation steps:
[( 179 - 312 ) ÷ 312] x 100 = -42.63%
Formula
Percentage change = [(179 - 312) / 312] x 100
Subtract the new number by the original number
179 - 312 = -133
-133 ÷ 312 = -0.42628205128205127
-0.42628205128205127 x 100 = -42.63%