-51.15% is the change from 305 to 149
Calculation steps:
[( 149 - 305 ) ÷ 305] x 100 = -51.15%
Formula
Percentage change = [(149 - 305) / 305] x 100
Subtract the new number by the original number
149 - 305 = -156
-156 ÷ 305 = -0.5114754098360655
-0.5114754098360655 x 100 = -51.15%