-52.09% is the change from 311 to 149
Calculation steps:
[( 149 - 311 ) ÷ 311] x 100 = -52.09%
Formula
Percentage change = [(149 - 311) / 311] x 100
Subtract the new number by the original number
149 - 311 = -162
-162 ÷ 311 = -0.5209003215434084
-0.5209003215434084 x 100 = -52.09%