-50.33% is the change from 306 to 152
Calculation steps:
[( 152 - 306 ) ÷ 306] x 100 = -50.33%
Formula
Percentage change = [(152 - 306) / 306] x 100
Subtract the new number by the original number
152 - 306 = -154
-154 ÷ 306 = -0.5032679738562091
-0.5032679738562091 x 100 = -50.33%