-50.65% is the change from 310 to 153
Calculation steps:
[( 153 - 310 ) ÷ 310] x 100 = -50.65%
Formula
Percentage change = [(153 - 310) / 310] x 100
Subtract the new number by the original number
153 - 310 = -157
-157 ÷ 310 = -0.5064516129032258
-0.5064516129032258 x 100 = -50.65%