-51.63% is the change from 306 to 148
Calculation steps:
[( 148 - 306 ) ÷ 306] x 100 = -51.63%
Formula
Percentage change = [(148 - 306) / 306] x 100
Subtract the new number by the original number
148 - 306 = -158
-158 ÷ 306 = -0.5163398692810458
-0.5163398692810458 x 100 = -51.63%