-51.94% is the change from 310 to 149
Calculation steps:
[( 149 - 310 ) ÷ 310] x 100 = -51.94%
Formula
Percentage change = [(149 - 310) / 310] x 100
Subtract the new number by the original number
149 - 310 = -161
-161 ÷ 310 = -0.5193548387096775
-0.5193548387096775 x 100 = -51.94%