-47.91% is the change from 311 to 162
Calculation steps:
[( 162 - 311 ) ÷ 311] x 100 = -47.91%
Formula
Percentage change = [(162 - 311) / 311] x 100
Subtract the new number by the original number
162 - 311 = -149
-149 ÷ 311 = -0.4790996784565916
-0.4790996784565916 x 100 = -47.91%