-52.26% is the change from 310 to 148
Calculation steps:
[( 148 - 310 ) ÷ 310] x 100 = -52.26%
Formula
Percentage change = [(148 - 310) / 310] x 100
Subtract the new number by the original number
148 - 310 = -162
-162 ÷ 310 = -0.5225806451612903
-0.5225806451612903 x 100 = -52.26%