-50.49% is the change from 307 to 152
Calculation steps:
[( 152 - 307 ) ÷ 307] x 100 = -50.49%
Formula
Percentage change = [(152 - 307) / 307] x 100
Subtract the new number by the original number
152 - 307 = -155
-155 ÷ 307 = -0.504885993485342
-0.504885993485342 x 100 = -50.49%