-49.68% is the change from 308 to 155
Calculation steps:
[( 155 - 308 ) ÷ 308] x 100 = -49.68%
Formula
Percentage change = [(155 - 308) / 308] x 100
Subtract the new number by the original number
155 - 308 = -153
-153 ÷ 308 = -0.4967532467532468
-0.4967532467532468 x 100 = -49.68%