-48.55% is the change from 311 to 160
Calculation steps:
[( 160 - 311 ) ÷ 311] x 100 = -48.55%
Formula
Percentage change = [(160 - 311) / 311] x 100
Subtract the new number by the original number
160 - 311 = -151
-151 ÷ 311 = -0.4855305466237942
-0.4855305466237942 x 100 = -48.55%