-51.31% is the change from 306 to 149
Calculation steps:
[( 149 - 306 ) ÷ 306] x 100 = -51.31%
Formula
Percentage change = [(149 - 306) / 306] x 100
Subtract the new number by the original number
149 - 306 = -157
-157 ÷ 306 = -0.5130718954248366
-0.5130718954248366 x 100 = -51.31%